b

Picking a Theory is Like Building a Boat at Sea

By decisions-and-info-gaps.blogspot.com
Published On :: Sun, 11 Dec 2011 12:14:00 +0000


"We are like sailors who on the open sea must reconstruct their ship
 but are never able to start afresh from the bottom." 
Otto Neurath's analogy in the words of Willard V. Quine

Engineers, economists, social planners, security strategists, and others base their plans and decisions on theories. They often argue long and hard over which theory to use. Is it ever right to use a theory that we know is empirically wrong, especially if a true (or truer) theory is available? Why is it so difficult to pick a theory?

Let's consider two introductory examples.

You are an engineer designing a robot. You must calculate the forces needed to achieve specified motions of the robotic arms. You can base these calculations on either of two theories. One theory assumes that an object comes to rest unless a force acts upon it. Let's call this axiom A. The other theory assumes that an object moves at constant speed unless a force acts upon it. Let's call this axiom G. Axiom A agrees with observation: Nothing moves continuously without the exertion of force; an object will come to rest unless you keep pushing it. Axiom G contradicts all observation; no experiment illustrates the perpetual motion postulated by the axiom. If all else is the same, which theory should you choose?

Axiom A is Aristotle's law of inertia, which contributed little to the development of mechanical dynamics. Axiom G is Galileo's law of inertia: one of the most fruitful scientific ideas of all time. Why is an undemonstrable assertion - axiom G - a good starting point for a theory?

Consider another example.

You are an economist designing a market-based policy to induce firms to reduce pollution. You will use an economic theory to choose between policies. One theory assumes that firms face pure competition, meaning that no single firm can influence market prices. Another theory provides agent-based game-theoretic characterization of how firms interact (without colluding) by observing and responding to price behavior of other firms and of consumers.

Pure competition is a stylized idealization (like axiom G). Game theory is much more realistic (like axiom A), but may obscure essential patterns in its massive detail. Which theory should you use?

We will not address the question of how to choose a theory upon which to base a decision. We will focus on the question: why is theory selection so difficult? We will discuss four trade offs.

"Thanks to the negation sign, there are as many truths as falsehoods;
we just can't always be sure which are which." Willard V. Quine

The tension between right and right. The number of possible theories is infinite, and sometimes it's hard to separate the wheat from the chaff, as suggested by the quote from Quine. As an example, I have a book called A Modern Guide to Macroeconomics: An Introduction to Competing Schools of Thought by Snowdon, Vane and Wynarczyk. It's a wonderful overview of about a dozen theories developed by leading economic scholars, many of them Nobel Prize Laureates. The theories are all fundamentally different. They use different axioms and concepts and they compete for adoption by economists. These theories have been studied and tested upside down and backwards. However, economic processes are very complex and variable, and the various theories succeed in different ways or in different situations, so the jury is still out. The choice of a theory is no simple matter because many different theories can all seem right in one way or another.

"The fox knows many things, but the hedgehog knows one big thing." Archilochus

The fox-hedgehog tension. This aphorism by Archilochus metaphorically describes two types of theories (and two types of people). Fox-like theories are comprehensive and include all relevant aspects of the problem. Hedgehog-like theories, in contrast, skip the details and focus on essentials. Axiom A is fox-like because the complications of friction are acknowledged from the start. Axiom G is hedgehog-like because inertial resistance to change is acknowledged but the complications of friction are left for later. It is difficult to choose between these types of theories because it is difficult to balance comprehensiveness against essentialism. On the one hand, all relevant aspects of the problem should be considered. On the other hand, don't get bogged down in endless details. This fox-hedgehog tension can be managed by weighing the context, goals and implications of the decision. We won't expand on this idea since we're not considering how to choose a theory; we're only examining why it's a difficult choice. However, the idea of resolving this tension by goal-directed choice motivates the third tension.

"Beyond this island of meanings which in their own nature are true or false
lies the ocean of meanings to which truth and falsity are irrelevant." John Dewey

The truth-meaning tension. Theories are collections of statements like axioms A and G in our first example. Statements carry meaning, and statements can be either true or false. Truth and meaning are different. For instance, "Archilochus was a Japanese belly dancer" has meaning, but is not true. The quote from Dewey expresses the idea that "meaning" is a broader description of statements than "truth". All true statements mean something, but not all meaningful statements are true. That does not imply, however, that all untrue meaningful statements are false, as we will see.

We know the meanings of words and sentences from experience with language and life. A child learns the meanings of words - chair, mom, love, good, bad - by experience. Meanings are learned by pointing - this is a chair - and also by experiencing what it means to love or to be good or bad.

Truth is a different concept. John Dewey wrote that

"truths are but one class of meanings, namely, those in which a claim to verifiability by their consequences is an intrinsic part of their meaning. Beyond this island of meanings which in their own nature are true or false lies the ocean of meanings to which truth and falsity are irrelevant. We do not inquire whether Greek civilization was true or false, but we are immensely concerned to penetrate its meaning."

A true statement, in Dewey's sense, is one that can be confirmed by experience. Many statements are meaningful, even important and useful, but neither true nor false in this experimental sense. Axiom G is an example.

Our quest is to understand why the selection of a theory is difficult. Part of the challenge derives from the tension between meaning and truth. We select a theory for use in formulating and evaluating a plan or decision. The decision has implications: what would it mean to do this rather than that? Hence it is important that the meaning of the theory fit the context of the decision. Indeed, hedgehogs would say that getting the meaning and implication right is the essence of good decision making.

But what if a relevantly meaningful theory is unprovable or even false? Should we use a theory that is meaningful but not verifiable by experience? Should we use a meaningful theory that is even wrong? This quandary is related to the fox-hedgehog tension because the fox's theory is so full of true statements that its meaning may be obscured, while the hedgehog's bare-bones theory has clear relevance to the decision to be made, but may be either false or too idealized to be tested.

Galileo's axiom of inertia is an idealization that is unsupported by experience because friction can never be avoided. Axiom G assumes conditions that cannot be realized so the axiom can never be tested. Likewise, pure competition is an idealization that is rarely if ever encountered in practice. But these theories capture the essence of many situations. In practical terms, what it means to get the robotic arm from here to there is to apply net forces that overcome Galilean inertia. But actually designing a robot requires considering details of dissipative forces like friction. What it means to be a small business is that the market price of your product is beyond your control. But actually running a business requires following and reacting to prices in the store next door.

It is difficult to choose between a relevantly meaningful but unverifiable theory, and a true theory that is perhaps not quite what we mean.

The knowledge-ignorance tension. Recall that we are discussing theories in the service of decision-making by engineers, social scientists and others. A theory should facilitate the use of our knowledge and understanding. However, in some situations our ignorance is vast and our knowledge will grow. Hence a theory should also account for ignorance and be able to accommodate new knowledge.

Let's take an example from theories of decision. The independence axiom is fundamental in various decision theories, for instance in von Neumann-Morgenstern expected utility theory. It says that one's choices should be independent of irrelevant alternatives. Suppose you are offered the dinner choice between chicken and fish, and you choose chicken. The server returns a few minutes later saying that beef is also available. If you switch your choice from chicken to fish you are violating the independence axiom. You prefer beef less than both chicken and fish, so the beef option shouldn't alter the fish-chicken preference.

But let's suppose that when the server returned and mentioned beef, your physician advised you to reduce your cholesterol intake (so your preference for beef is lowest) which prompted your wife to say that you should eat fish at least twice a week because of vitamins in the oil. So you switch from chicken to fish. Beef is not chosen, but new information that resulted from introducing the irrelevant alternative has altered the chicken-fish preference.

One could argue for the independence axiom by saying that it applies only when all relevant information (like considerations of cholesterol and fish oil) are taken into account. On the other hand, one can argue against the independence axiom by saying that new relevant information quite often surfaces unexpectedly. The difficulty is to judge the extent to which ignorance and the emergence of new knowledge should be central in a decision theory.

Wrapping up. Theories express our knowledge and understanding about the unknown and confusing world. Knowledge begets knowledge. We use knowledge and understanding - that is, theory - in choosing a theory. The process is difficult because it's like building a boat on the open sea as Otto Neurath once said. 


Full Article

b

Jabberwocky. Or: Grand Unified Theory of Uncertainty???

By decisions-and-info-gaps.blogspot.com
Published On :: Mon, 19 Dec 2011 07:30:00 +0000


Jabberwocky, Lewis Carroll's whimsical nonsense poem, uses made-up words to create an atmosphere and to tell a story. "Billig", "frumious", "vorpal" and "uffish" have no lexical meaning, but they could have. The poem demonstrates that the realm of imagination exceeds the bounds of reality just as the set of possible words and meanings exceeds its real lexical counterpart.

Uncertainty thrives in the realm of imagination, incongruity, and contradiction. Uncertainty falls in the realm of science fiction as much as in the realm of science. People have struggled with uncertainty for ages and many theories of uncertainty have appeared over time. How many uncertainty theories do we need? Lots, and forever. Would we say that of physics? No, at least not forever.

Can you think inconsistent, incoherent, or erroneous thoughts? I can. (I do it quite often, usually without noticing.) For those unaccustomed to thinking incongruous thoughts, and who need a bit of help to get started, I can recommend thinking of "two meanings packed into one word like a portmanteau," like 'fuming' and 'furious' to get 'frumious' or 'snake' and 'shark' to get 'snark'.

Portmanteau words are a start. Our task now is portmanteau thoughts. Take for instance the idea of a 'thingk':

When I think a thing I've thought,
I have often felt I ought
To call this thing I think a "Thingk",
Which ought to save a lot of ink.

The participle is written "thingking",
(Which is where we save on inking,)
Because "thingking" says in just one word:
"Thinking of a thought thing." Absurd!

All this shows high-power abstraction.
(That highly touted human contraption.)
Using symbols with subtle feint,
To stand for something which they ain't.

Now that wasn't difficult: two thoughts at once. Now let those thoughts be contradictory. To use a prosaic example: thinking the unthinkable, which I suppose is 'unthingkable'. There! You did it. You are on your way to a rich and full life of thinking incongruities, fallacies and contradictions. We can hold in our minds thoughts of 4-sided triangles, parallel lines that intersect, and endless other seeming impossibilities from super-girls like Pippi Longstockings to life on Mars (some of which may actually be true, or at least possible).

Scientists, logicians, and saints are in the business of dispelling all such incongruities, errors and contradictions. Banishing inconsistency is possible in science because (or if) there is only one coherent world. Belief in one coherent world and one grand unified theory is the modern secular version of the ancient monotheistic intuition of one universal God (in which saints tend to believe). Uncertainty thrives in the realm in which scientists and saints have not yet completed their tasks (perhaps because they are incompletable). For instance, we must entertain a wide range of conflicting conceptions when we do not yet know how (or whether) quantum mechanics can be reconciled with general relativity, or Pippi's strength reconciled with the limitations of physiology. As Henry Adams wrote:

"Images are not arguments, rarely even lead to proof, but the mind craves them, and, of late more than ever, the keenest experimenters find twenty images better than one, especially if contradictory; since the human mind has already learned to deal in contradictions."

The very idea of a rigorously logical theory of uncertainty is startling and implausible because the realm of the uncertain is inherently incoherent and contradictory. Indeed, the first uncertainty theory - probability - emerged many centuries after the invention of the axiomatic method in mathematics. Today we have many theories of uncertainty: probability, imprecise probability, information theory, generalized information theory, fuzzy logic, Dempster-Shafer theory, info-gap theory, and more (the list is a bit uncertain). Why such a long and diverse list? It seems that in constructing a logically consistent theory of the logically inconsistent domain of uncertainty, one cannot capture the whole beast all at once (though I'm uncertain about this).

A theory, in order to be scientific, must exclude something. A scientific theory makes statements such as "This happens; that doesn't happen." Karl Popper explained that a scientific theory must contain statements that are at risk of being wrong, statements that could be falsified. Deborah Mayo demonstrated how science grows by discovering and recovering from error.

The realm of uncertainty contains contradictions (ostensible or real) such as the pair of statements: "Nine year old girls can lift horses" and "Muscle fiber generates tension through the action of actin and myosin cross-bridge cycling". A logically consistent theory of uncertainty can handle improbabilities, as can scientific theories like quantum mechanics. But a logical theory cannot encompass outright contradictions. Science investigates a domain: the natural and physical worlds. Those worlds, by virtue of their existence, are perhaps coherent in a way that can be reflected in a unified logical theory. Theories of uncertainty are directed at a larger domain: the natural and physical worlds and all imaginable (and unimaginable) other worlds. That larger domain is definitely not coherent, and a unified logical theory would seem to be unattainable. Hence many theories of uncertainty are needed.

Scientific theories are good to have, and we do well to encourage the scientists. But it is a mistake to think that the scientific paradigm is suitable to all domains, in particular, to the study of uncertainty. Logic is a powerful tool and the axiomatic method assures the logical consistency of a theory. For instance, Leonard Savage argued that personal probability is a "code of consistency" for choosing one's behavior. Jim March compares the rigorous logic of mathematical theories of decision to strict religious morality. Consistency between values and actions is commendable says March, but he notes that one sometimes needs to deviate from perfect morality. While "[s]tandard notions of intelligent choice are theories of strict morality ... saints are a luxury to be encouraged only in small numbers." Logical consistency is a merit of any single theory, including a theory of uncertainty. However, insisting that the same logical consistency apply over the entire domain of uncertainty is like asking reality and saintliness to make peace.


Full Article

b

I am a Believer

By decisions-and-info-gaps.blogspot.com
Published On :: Mon, 23 Apr 2012 05:11:00 +0000


There are many things that I don't know. About the past: how my great-great-grandfather supported his family, how Charlemagne consolidated his imperial power, or how Rabbi Akiva became a scholar. About the future: whether I'll get that contract, how much the climate will change in the next 100 years, or when the next war will erupt. About why things are as they are: why stones fall and water freezes, or why people love or hate or don't give a damn, or why we are, period.

We reflect about questions like these, trying to answer them and to learn from them. For instance, we are interested in the relations between Charlemagne and his co-ruling brother Carloman. This can tell us about brothers, about emperors, and about power. We are interested in Akiva because he purportedly started studying at the age of 40, which tells us something about the indomitable human spirit.

We sometimes get to the bottom of things and understand the whys and ways of our world. We see patterns and discover laws of nature, or at least we tell stories of how things happen. Stones fall because it's their nature to seek the center of the world (Aristotle), or due to gravitational attraction (Newton), or because of mass-induced space warp (Einstein). Human history has its patterns, driven by the will to power of heroic leaders, or by the unfolding of truth and justice, or by God's hand in history.

We also think about thinking itself, as suggested by Rodin's Thinker. What is thinking (or what do we think it is)? Is thinking a physical process, like electrons whirling in our brain? Or does thinking involve something transcendental; maybe the soul whirling in the spheres? Each age has its answers.

We sometimes get stuck, and can't figure things out or get to the bottom of things. Sometimes we even realize that there is no "bottom", that each answer brings its own questions. As John Wheeler said, "We live on an island of knowledge surrounded by a sea of ignorance. As our island of knowledge grows, so does the shore of our ignorance."

Sometimes we get stuck in an even subtler way that is very puzzling, and even disturbing. Any rational chain of thought must have a starting point. Any rational justification of that starting point must have its own starting point. In other words, any attempt to rationally justify rational thought can never be completed. Rational thought cannot justify itself, which is almost the same as saying that rational thought is not justified. Any specific rational argument - Einstein's cosmology or Piaget's psychology - is justified based on its premises (and evidence, and many other things). But Rational Thought, as a method, as a way of life and a core of civilization, cannot ultimately and unequivocally justify itself.

I believe that experience reflects reality, and that thought organizes experience to reveal the patterns of reality. The truth of this belief is, I believe, self evident and unavoidable. Just look around you. Flowers bloom anew each year. Planets swoop around with great regularity. We have learned enough about the world to change it, to control it, to benefit from it, even to greatly endanger our small planetary corner of it. I believe that rational thought is justified, but that's a belief, not a rational argument.

Rational thought, in its many different forms, is not only justified; it is unavoidable. We can't resist it. Moses saw the flaming bush and was both frightened and curious because it was not consumed (Exodus 3:1-3). He was drawn towards it despite his fear. The Unknown draws us irresistibly on an endless search for order and understanding. The Unknown drives us to search for knowledge, and the search is not fruitless. This I believe. 


Full Article

b

Why We Need Libraries, Or, Memory and Knowledge

By decisions-and-info-gaps.blogspot.com
Published On :: Sat, 26 May 2012 06:19:00 +0000


"Writing is thinking in slow motion. We see what at normal speeds escapes us, can rerun the reel at will to look for errors, erase, interpolate, and rethink. Most thoughts are a light rain, fall upon the ground, and dry up. Occasionally they become a stream that runs a short distance before it disappears. Writing stands an incomparably better chance of getting somewhere.

"... What is written can be given endlessly and yet retained, read by thousands even while it is being rewritten, kept as it was and revised at the same time. Writing is magic." 
Walter Kaufmann

We are able to know things because they happen again and again. We know about the sun because it glares down on us day after day. Scientists learn the laws of nature, and build confidence in their knowledge, by testing their theories over and over and getting the same results each time. We would be unable to learn the patterns and ways of our world if nothing were repeatable.

But without memory, we could learn nothing even if the world were tediously repetitive. Even though the sun rises daily in the east, we could not know this if we couldn't remember it.

The world has stable patterns, and we are able to discover these patterns because we remember. Knowledge requires more than memory, but memory is an essential element.

The invention of writing was a great boon to knowledge because writing is collective memory. For instance, the Peloponnesian wars are known to us through Thucydides' writings. People understand themselves and their societies in part through knowing their history. History, as distinct from pre-history, depends on the written word. For example, each year at the Passover holiday, Jewish families through the ages have read the story of the Israelite exodus from Egypt. We are enjoined to see ourselves as though we were there, fleeing Egypt and trudging through the desert. Memory, recorded for all time, creates individual and collective awareness, and motivates aspirations and actions.

Without writing, much collective memory would be lost, just as books themselves are sometimes lost. We know, for instance, that Euclid wrote a book called Porisms, but the book is lost and we know next to nothing about its message. Memory, and knowledge, have been lost.

Memory can be uncertain. We've all experienced that on the personal level. Collective memory can also be uncertain. We're sometimes uncertain of the meaning of rare ancient words, such as lilit in Isaiah (34:14) or gvina in Job (10:10). Written traditions, while containing an element of truth, may be of uncertain meaning or veracity. For instance, we know a good deal, both from the Bible and from archeological findings, about Hezekiah who ruled the kingdom of Judea in the late 8th century BCE. About David, three centuries earlier, we can be much less certain. Biblical stories are told in great detail but corroboration is hard to obtain.

Memory can be deliberately corrupted. Records of history can be embellished or prettified, as when a king commissions the chronicling of his achievements. Ancient monuments glorifying imperial conquests are invaluable sources of knowledge of past ages, but they are unreliable and must be interpreted cautiously. Records of purported events that never occurred can be maliciously fabricated. For instance, The Protocols of the Elders of Zion is pure invention, though that book has been re-published voluminously throughout the world and continues to be taken seriously by many people. Memory is alive and very real, even if it is memory of things that never happened.

Libraries are the physical medium of human collective memory, and an essential element in maintaining and enlarging our knowledge. There are many types of libraries. The family library may have a few hundred books, while the library of Congress has 1,349 km of bookshelves and holds about 147 million items. Libraries can hold paper books or digital electronic documents. Paper can perish in fire as happened to the Alexandrian library, while digital media can be erased, or become damaged and unreadable. Libraries, like memory itself, are fragile and need care.

Why do we need libraries? Being human means, among other things, the capacity for knowledge, and the ability to appreciate and benefit from it. The written record is a public good, like the fresh air. I can read Confucius or Isaiah centuries after they lived, and my reading does not consume them. Our collective memory is part of each individual, and preserving that memory preserves a part of each of us. Without memory, we are without knowledge. Without knowledge, we are only another animal.


Full Article

b

Habit: A Response to the Unknown

By decisions-and-info-gaps.blogspot.com
Published On :: Sat, 10 Nov 2012 15:06:00 +0000


David Hume explained that we believe by habit that logs will burn, stones will fall, and endless other past patterns will recur. No experiment can prove the future recurrence of past events. An experiment belongs to the future only until it is implemented; once completed, it becomes part of the past. In order for past experiments to prove something about the future, we must assume that the past will recur in the future. That's as circular as it gets.

But without the habit of believing that past patterns will recur, we would be incapacitated and ineffectual (and probably reduced to moping and sobbing). Who would dare climb stairs or fly planes or eat bread and drink wine, without the belief that, like in the past, the stairs will bear our weight, the wings will carry us aloft, and the bread and wine will nourish our body and soul. Without such habits we would become a jittering jelly of indecision in the face of the unknown.

But you can't just pull a habit out of a hat. We spend great effort instilling good habits in our children: to brush their teeth, tell the truth, and not pick on their little sister even if she deserves it.

As we get older, and I mean really older, we begin to worry that our habits become frozen, stodgy, closed-minded and constraining. Younger folks smile at our rigid ways, and try to loosen us up to the new wonders of the world: technological, culinary or musical. Changing your habits, or staying young when you aren't, isn't always easy. Without habits we're lost in an unknowable world.

And yet, openness to new ideas, tastes, sounds and other experiences of many sorts can itself be a habit, and perhaps a good one. It is the habit of testing the unknown, of acknowledging the great gap between what we do know and what we can know. That gap is an invitation to growth and awe, as well as to fear and danger.

The habit of openness to change is not a contradiction. It is simply a recognition that habits are a response to the unknown. Not everything changes all the time (or so we're in the habit of thinking), and some things are new under the sun (as newspapers and Nobel prize committees periodically remind us).

Habits, including the habit of open-mindedness, are a good thing precisely because we can never know for sure how good or bad they really are.


Full Article

b

New JHBS: Mind-Body Medicine Before Freud, Psychology and Biography, Jung and Einstein

By ahp.apps01.yorku.ca
Published On :: Thu, 30 Apr 2020 12:54:00 +0000

The Spring 2020 issue of the Journal of the History of the Behavioral Sciences is now online. Full details about contributions to this issue follow below. “Practicing mind-body medicine before Freud: John G. Gehring, the “Wizard of the Androscoggin”” by. Ben Harris and Courtney J. Stevens. Abstract: This article describes the psychotherapy practice of physician … Continue reading New JHBS: Mind-Body Medicine Before Freud, Psychology and Biography, Jung and Einstein →


Full Article

b

New Theory & Psychology: Early Critical Theory and Beck’s Cognitive Theory

By ahp.apps01.yorku.ca
Published On :: Fri, 01 May 2020 12:21:00 +0000

Two articles in the most recent issue of Theory & Psychology may interest AHP readers. Full details below. “How lost and accomplished revolutions shaped psychology: Early Critical Theory (Frankfurt School), Wilhelm Reich, and Vygotsky,” by Gordana Jovanovi?. Abstract: On the occasion of recent centenaries of revolutions in Europe (1917, 1918–19), this article examines, within a … Continue reading New Theory & Psychology: Early Critical Theory and Beck’s Cognitive Theory →


Full Article

b

Forthcoming in JHBS: Quêtelet on Deviance, McClelland on Leadership, Psychological Warfare, and More

By ahp.apps01.yorku.ca
Published On :: Fri, 01 May 2020 14:43:00 +0000

A number of articles now in press at the Journal of the History of the Behavioral Sciences will be of interest to AHP readers. Full details below. “Uncovering the metaphysics of psychological warfare: The social science behind the Psychological Strategy Board’s operations planning, 1951–1953,” Gabrielle Kemmis. Abstract: In April 1951 president Harry S. Truman established … Continue reading Forthcoming in JHBS: Quêtelet on Deviance, McClelland on Leadership, Psychological Warfare, and More →


Full Article

b

CfP: Shaping the ‘Socialist Self’? The Role of Psy-Sciences in Communist States of the Eastern Bloc (1948–1989)

By ahp.apps01.yorku.ca
Published On :: Wed, 06 May 2020 01:10:00 +0000

CALL FOR PAPERSINTERNATIONAL WORKSHOP Shaping the ‘Socialist Self’? The Role of Psy-Sciences in Communist States of the Eastern Bloc (1948–1989) Date: 6 November 2020 Venue: Prague, Czech Republic Deadline for applications: 30 June 2020 Organizing institutions: CEFRES (French Research Center in Humanities and Social Sciences in Prague) Institute of Contemporary History of the Czech Academy of Sciences Collegium Carolinum … Continue reading CfP: Shaping the ‘Socialist Self’? The Role of Psy-Sciences in Communist States of the Eastern Bloc (1948–1989) →


Full Article

b

May HoP, including a Special Section: Who Was Little Albert? The Historical Controversy

By ahp.apps01.yorku.ca
Published On :: Fri, 08 May 2020 19:25:00 +0000

Photographs of John Watson (left) and Rosalie Rayner (right) via Ben Harris. The May 2020 issue of History of Psychology is now online. The issue includes a special section on “Who Was Little Albert? The Historical Controversy.” Full details follow below. Special Section: Who Was Little Albert? The Historical Controversy“Journals, referees, and gatekeepers in the … Continue reading May HoP, including a Special Section: Who Was Little Albert? The Historical Controversy →


Full Article

b

The Breakfast That Boosts Weight Loss By 65%

By www.spring.org.uk
Published On :: Wed, 06 May 2020 15:00:07 +0000

The food lowers cravings for high-sugar and high-fat foods and suppresses appetite during the day.

→ Support PsyBlog for just $5 per month. Enables access to articles marked (M) and removes ads.

→ Explore PsyBlog's ebooks, all written by Dr Jeremy Dean:


Full Article

b

The Music That Boosts Learning By 18% (M)

By www.spring.org.uk
Published On :: Thu, 07 May 2020 15:30:29 +0000

Three classical pieces that boost memory retention.

→ Support PsyBlog for just $5 per month. Enables access to articles marked (M) and removes ads.

→ Explore PsyBlog's ebooks, all written by Dr Jeremy Dean:


Full Article

b

The Best Material For A Homemade COVID-19 Mask

By www.spring.org.uk
Published On :: Sat, 09 May 2020 15:00:21 +0000

The best type of fabric for a breathable but effective COVID-19 mask.

→ Support PsyBlog for just $5 per month. Enables access to articles marked (M) and removes ads.

→ Explore PsyBlog's ebooks, all written by Dr Jeremy Dean:


Full Article

b

Cuddling: The Amazing Effect On Your Brain

By www.spring.org.uk
Published On :: Sat, 09 May 2020 15:30:14 +0000

For the study, 10 couples spent 45 minutes inside a brain scanner together in close physical contact.

→ Support PsyBlog for just $5 per month. Enables access to articles marked (M) and removes ads.

→ Explore PsyBlog's ebooks, all written by Dr Jeremy Dean:


Full Article

b

Can CBD Help Your Mental Health?

By feedproxy.google.com
Published On :: Wed, 12 Feb 2020 21:42:36 +0000

These days, there is huge hype around cannabidiol (also known as CBD), and for good reason.  There are numerous health benefits that are linked to this non-psychoactive all-natural substance. Many people report that CBD has helped them to manage mental and emotional distress. But are those reports true? Can CBD help your mental health? In […]


Full Article

b

Charles Barkley believes in the hot hand fallacy – when it comes to poker, anyway

By nudges.org
Published On :: Mon, 29 Aug 2011 22:43:33 +0000

NBA legend and recreational gambler Charles Barkley is presented with the following hypothetical on ESPN radio: You are winning big at the poker table when a beautiful woman sits down next to you. “Do you stay with the hands or do you leave?” Barkley: “Bro, gambling is so fickle, I love to gamble, when you [...]


Full Article

b

Prospect theory in the Moneyball movie

By nudges.org
Published On :: Mon, 05 Sep 2011 19:18:11 +0000

“I hate losing more than I even wanna win.” – Oakland Athletics General Manager Billy Beane (or some creative Hollywood writer channeling Billy Beane) Around 40 seconds in.


Full Article

b

“Mandate-Schmandate,” Rick Perry and the HPV vaccine – by Richard Thaler

By nudges.org
Published On :: Fri, 09 Sep 2011 02:11:23 +0000

Nudge blog note: Last night’s Republican debate prompted Richard Thaler to weigh in on Rick Perry’s handling of an HPV vaccine executive order, but not the policy itself. Also, Thaler recently started tweeting. Follow him. By Richard Thaler In the Republican Presidential debate last night at the Reagan library a question emerged about Rick Perry’s [...]


Full Article

b

The Obama administration launches RECAP

By nudges.org
Published On :: Tue, 13 Sep 2011 22:42:25 +0000

It goes by the name “Smart Disclosure,” in an announcement to the heads of federal departments and agencies. The term “smart disclosure” refers to the timely release of complex information and data in standardized, machine readable formats in ways that enable consumers to make informed decisions. Smart disclosure will typically take the form of providing [...]


Full Article

b

Where is behavioral economics headed in the world of marketing?

By nudges.org
Published On :: Mon, 10 Oct 2011 01:22:04 +0000

The Nudge blog sat down (electronically) with John Kenny, Senior Vice President of Strategic Planning in Draftfcb’s Chicago office, to explore whether behavioral economics is just a fad in marketing or a legitimate tool to help the industry perform better. Starting with the Institute of Decision Making, Draftfcb has been one of the leaders in [...]


Full Article

b

Here’s how Washington State’s nudge for state park donations works via its web site

By nudges.org
Published On :: Wed, 12 Oct 2011 00:47:34 +0000

A couple years ago, Washington State switched the default rule on state park fees that drivers pay (or don’t pay) when they renew their licenses. Reader Steve Loeb nicely captures what this switch looks like on the Washington State Department of Licensing site.


Full Article

b

Women Who Buy Sex: Why They Do It, And What Their Experiences Are Like

By feedproxy.google.com
Published On :: Mon, 30 Mar 2020 14:00:00 +0000

Most research on people who patronize sex workers has focused on men. In some ways, this isn’t surprising because men are much more likely to report having paid for sex than are women. For example, in a recent YouGov survey of 1,000 adult Americans, 12% of men reported having paid for sex before compared to just 1% of women. Similarly, in a nationally representative survey of more than 20,000 Australians aged 16-69, researchers found that 17% of men said they had paid for sex, while only 0.3% of women said the same [1]. However, these figures may significantly underreport the actual number of women who have ever engaged the services of a sex worker.


Full Article

b

Why The Pandemic is Making Some People Horny--But Turning Others Off

By feedproxy.google.com
Published On :: Fri, 03 Apr 2020 14:00:00 +0000

There are a lot of conflicting media reports out right now about how the COVID-19 coronavirus pandemic is affecting people’s sex drives. Some are saying that all of the stress and anxiety is putting a damper on desire, while others are saying that everyone is super horny. So which is it? Truth be told, it’s probably a bit of both.


Full Article

b

Lockdown Reading Recommendations for People Who Like to Read About Sex

By feedproxy.google.com
Published On :: Fri, 10 Apr 2020 14:00:00 +0000

I know that many of you are bored and horny right now during this lockdown and quarantine period, so allow me to recommend some of my favorite sex books! If you follow me on Instagram, you’ve probably already seen a few of my recommendations, but here’s a more extensive reading list.


Full Article

  • Featured Books and Films
b

I’m a Cisgender Woman and My Husband Watches Trans Porn: Does That Mean He’s Not Into Me?

By feedproxy.google.com
Published On :: Fri, 24 Apr 2020 14:00:00 +0000

A reader submitted the following question: “I recently discovered that my husband is attracted to transsexuals (MTF - non op). This is the only type of porn that he looks at. He also role plays online with men for sexual play and chat. I discovered this after I started snooping because I had some red flags. He is very embarrassed and uncomfortable discussing it. He has apologized for the online chatting (as we had agreed this was out of bounds for our relationship). He says he likes them because they are feminine but his primary attraction is to women (with female parts). However, I just am not sure I believe him. I am terrified that when we are intimate (which I have to pretty much beg for), he can only do it when its dark and I am fearful he is fantasizing that I have a penis. This bothers me deeply on a number of different levels. Are there men who are only interested in transsexuals? Is it possible he is no longer turned on by my female genitalia?” There’s a lot to unpack in this question, but let’s start here: over the years, I’ve received several emails from women describing similar stories and concerns, so you’re not alone in feeling the way that you do.


Full Article

  • Sex Question Friday
  • Sexual Problems and Solutions
b

5 Common Myths About Sexually Transmitted Infections

By feedproxy.google.com
Published On :: Mon, 27 Apr 2020 14:00:00 +0000

April is STD Awareness Month, so let’s take a little time to set the record straight on some popular myths about sexually transmitted infections and diseases. In this post, we’ll explore five of the most common misconceptions.


Full Article

b

Fact Check: Does Pubic Hair Grooming Increase the Risk of Getting an STI?

By feedproxy.google.com
Published On :: Fri, 01 May 2020 14:00:00 +0000

Sexually transmitted infections (STIs) are on the rise, and many people are curious about the reasons why. While the cause is obviously multifactorial, some have suggested that at least part of the rise in STIs may be due to increasing rates of pubic hair grooming in men and women alike. Given that it’s not uncommon for people to experience cuts and skin irritation from genital grooming practices, it at least sounds plausible in theory that pubic hair shaving could potentially increase infection risk. But what does the research actually say?


Full Article

b

Rates of Consensual and Nonconsensual Nonmonogamy Among Heterosexual, Gay, and Bisexual Adults

By feedproxy.google.com
Published On :: Mon, 04 May 2020 14:00:00 +0000

I was recently invited to write a book chapter on nonmonogamy in LGBTQ+ relationships, and one of the things I wanted to do in it was compare the prevalence of both consensual nonmonogamy (polyamory, open relationships, swinging) and nonconsensual nonmonogamy (cheating/infidelity). Further, I wanted to look at whether rates of these practices were similar or different for LGBTQ+ persons compared to heterosexual persons. However, I found it surprisingly difficult to locate reliable data points. The problem I kept running into is that study after study conflated consensual nonmonogamy with nonconsensual nonmonogamy. In other words, researchers were putting all of these folks into the same category without attempting to distinguish whether they were permitted under the rules of the relationship or not.


Full Article

b

Five Things Science Has Taught Us About Asexuality

By feedproxy.google.com
Published On :: Fri, 08 May 2020 14:00:00 +0000

Research has found that around 1% of the population is asexual, a term usually defined as either a lack of sexual attraction or a lack of desire for partnered sexual activity [1]. Asexuality is something that many people are not familiar with and, as a result, there are lots of myths and misconceptions about it. So, let’s take a moment to review some key facts about asexuality that science has taught us.


Full Article

b

How women are revolutionizing Rwanda | Agnes Binagwaho

By feedproxy.google.com
Published On :: Fri, 06 Mar 2020 15:56:47 +0000

In 1996, Agnes Binagwaho returned home to Rwanda in the aftermath of its genocide. She considered leaving amid the overwhelming devastation, but women in her community motivated her to stay and help rebuild -- and she's glad she did. In an inspiring talk, Binagwaho reflects on her work as Rwanda's former Minister of Health and discusses her new women's education initiative for the country, which strives to create one of the greatest levels of gender equality worldwide.


Full Article

b

How menopause affects the brain | Lisa Mosconi

By feedproxy.google.com
Published On :: Tue, 10 Mar 2020 14:59:54 +0000

Many of the symptoms of menopause -- hot flashes, night sweats, insomnia, memory lapses, depression and anxiety -- start in the brain. How exactly does menopause impact cognitive health? Sharing groundbreaking findings from her research, neuroscientist Lisa Mosconi reveals how decreasing hormonal levels affect brain aging -- and shares simple lifestyle changes you can make to support lifelong brain health.


Full Article

b

Why it's so hard to talk about the N-word | Elizabeth Stordeur Pryor

By feedproxy.google.com
Published On :: Thu, 12 Mar 2020 15:19:08 +0000

Historian Elizabeth Stordeur Pryor leads a thoughtful and history-backed examination of one of the most divisive words in the English language: the N-word. Drawing from personal experience, she explains how reflecting on our points of encounter with the word can help promote productive discussions and, ultimately, create a framework that reshapes education around the complicated history of racism in the US.


Full Article

b

The beautiful, mysterious science of how you hear | Jim Hudspeth

By feedproxy.google.com
Published On :: Fri, 13 Mar 2020 14:57:05 +0000

Have you ever wondered how your ears work? In this delightful and fascinating talk, biophysicist Jim Hudspeth demonstrates the wonderfully simple yet astonishingly powerful mechanics of hair cells, the microscopic powerhouses that make hearing possible -- and explains how, when it's really quiet, your ears will begin to beam out a spectrum of sounds unique to you.


Full Article

b

Why COVID-19 is hitting us now -- and how to prepare for the next outbreak | Alanna Shaikh

By feedproxy.google.com
Published On :: Mon, 16 Mar 2020 20:11:06 +0000

Where did the new coronavirus originate, how did it spread so fast -- and what's next? Sharing insights from the outbreak, global health expert and TED Fellow Alanna Shaikh traces the spread of COVID-19, discusses why travel restrictions aren't effective and highlights the medical changes needed worldwide to prepare for the next pandemic. "We need to make sure that every country in the world has the capacity to identify new diseases and treat them," she says. (Recorded March 5, 2020. Update: the CDC is now calling for everyone to wear face coverings in public.)


Full Article

b

Without farmers, you'd be hungry, naked and sober | Eric Sannerud

By feedproxy.google.com
Published On :: Wed, 18 Mar 2020 15:10:43 +0000

Farmers keep us fed and our economies stable, but in the US they're retiring faster than they're being replaced. Take a crash course in agricultural policy with Eric Sannerud to see why this problem can't be solved by simply buying from your local farmer's market -- and learn how you can use your vote to create a better future for farmers.


Full Article

b

Go ahead, dream about the future | Charlie Jane Anders

By feedproxy.google.com
Published On :: Fri, 20 Mar 2020 14:50:16 +0000

"You don't predict the future -- you imagine the future," says sci-fi writer Charlie Jane Anders. In a talk that's part dream, part research-based extrapolation, she takes us on a wild, speculative tour of the delights and challenges the future may hold -- and shows how dreaming up weird, futuristic possibilities empowers us to construct a better tomorrow.


Full Article

b

The weird history of the "sex chromosomes" | Molly Webster

By feedproxy.google.com
Published On :: Mon, 23 Mar 2020 14:48:37 +0000

The common thinking on biological sex goes like this: females have two X chromosomes in their cells, while males have one X and one Y. In this myth-busting talk, science writer and podcaster Molly Webster shows why the so-called "sex chromosomes" are more complicated than this simple definition -- and reveals why we should think about them differently.


Full Article

b

How to be your best self in times of crisis | Susan David

By feedproxy.google.com
Published On :: Wed, 25 Mar 2020 03:46:48 +0000

"Life's beauty is inseparable from its fragility," says psychologist Susan David. In a special virtual conversation, she shares wisdom on how to build resilience, courage and joy in the midst of the coronavirus pandemic. Responding to listeners' questions from across the globe, she offers ways to talk to your children about their emotions, keep focus during the crisis and help those working on the front lines. (This virtual conversation is part of the TED Connects series, hosted by head of TED Chris Anderson and current affairs curator Whitney Pennington Rodgers. Recorded March 23, 2020)


Full Article

b

How we must respond to the coronavirus pandemic | Bill Gates

By feedproxy.google.com
Published On :: Wed, 25 Mar 2020 17:07:16 +0000

Philanthropist and Microsoft cofounder Bill Gates offers insights into the COVID-19 pandemic, discussing why testing and self-isolation are essential, which medical advancements show promise and what it will take for the world to endure this crisis. (This virtual conversation is part of the TED Connects series, hosted by head of TED Chris Anderson and current affairs curator Whitney Pennington Rodgers. Recorded March 24, 2020)


Full Article

b

2 questions to uncover your passion -- and turn it into a career | Noeline Kirabo

By feedproxy.google.com
Published On :: Thu, 26 Mar 2020 15:02:29 +0000

What's your passion? Social entrepreneur Noeline Kirabo reflects on her work helping out-of-school young people in Uganda turn their passions into profitable businesses -- and shares the two questions you can ask yourself to begin doing the same.


Full Article

b

Indigenous knowledge meets science to solve climate change | Hindou Oumarou Ibrahim

By feedproxy.google.com
Published On :: Fri, 27 Mar 2020 14:55:23 +0000

To tackle a problem as large as climate change, we need both science and Indigenous wisdom, says environmental activist Hindou Oumarou Ibrahim. In this engaging talk, she shares how her nomadic community in Chad is working closely with scientists to restore endangered ecosystems -- and offers lessons on how to create more resilient communities.


Full Article

b

The quest for the coronavirus vaccine | Seth Berkley

By feedproxy.google.com
Published On :: Fri, 27 Mar 2020 16:36:31 +0000

When will the coronavirus vaccine be ready? Epidemiologist Seth Berkley (head of Gavi, the Vaccine Alliance) takes us inside the effort to create a vaccine for COVID-19. With clarity and urgency, he explains what makes it so challenging to develop, when we can expect it to be rolled out at scale and why we'll need global collaboration to get it done. (This virtual conversation is part of the TED Connects series, hosted by head of TED Chris Anderson and current affairs curator Whitney Pennington Rodgers. Recorded March 26, 2020)


Full Article

b

How we can navigate the coronavirus pandemic with courage and hope | Rabbi Lord Jonathan Sacks

By feedproxy.google.com
Published On :: Mon, 30 Mar 2020 23:37:32 +0000

Rabbi Lord Jonathan Sacks offers thoughts on how we can navigate the coronavirus pandemic with courage, hope and empathy. With wisdom and clarity, he speaks on leadership, fear, death, hope and how we could use this moment to build a more just world. Watch for a special, impromptu prayer about halfway through the conversation. (This virtual conversation is part of the TED Connects series, hosted by head of TED Chris Anderson and head of curation Helen Walters. Recorded March 30, 2020)


Full Article

b

How you can help save the monarch butterfly -- and the planet | Mary Ellen Hannibal

By feedproxy.google.com
Published On :: Wed, 01 Apr 2020 15:01:51 +0000

Monarch butterflies are dying at an alarming rate around the world -- a looming extinction that could also put human life at risk. But we have just the thing to help save these insects, says author Mary Ellen Hannibal: citizen scientists. Learn how these grassroots volunteers are playing a crucial role in measuring and rescuing the monarch's dwindling population -- and how you could join their ranks to help protect nature. (You'll be in good company: Charles Darwin was a citizen scientist!)


Full Article