Understand how customer brains work - these are the most important cognitive biases for e-commerce marketers.

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Sex discrimination against women.

Edinburgh : Young J. Pentland, 1903.

Dorpat : H. Laakmann, 1890.

Gottingen : A. Rente, 1866.

London : Stacy Bias, 2019.

Mikael Escobar-Bach, Yuri Goegebeur, Armelle Guillou.

Source: Electronic Journal of Statistics, Volume 14, Number 1, 1773--1795.

Abstract:
We consider bias-corrected estimation of the stable tail dependence function in the regression context. To this aim, we first estimate the bias of a smoothed estimator of the stable tail dependence function, and then we subtract it from the estimator. The weak convergence, as a stochastic process, of the resulting asymptotically unbiased estimator of the conditional stable tail dependence function, correctly normalized, is established under mild assumptions, the covariate argument being fixed. The finite sample behaviour of our asymptotically unbiased estimator is then illustrated on a simulation study and compared to two alternatives, which are not bias corrected. Finally, our methodology is applied to a dataset of air pollution measurements.

Yuling Yan, Bret Hanlon, Sebastien Roch, Karl Rohe.

Source: Electronic Journal of Statistics, Volume 14, Number 1, 1577--1610.

Abstract:
Respondent-driven sampling (RDS) collects a sample of individuals in a networked population by incentivizing the sampled individuals to refer their contacts into the sample. This iterative process is initialized from some seed node(s). Sometimes, this selection creates a large amount of seed bias. Other times, the seed bias is small. This paper gains a deeper understanding of this bias by characterizing its effect on the limiting distribution of various RDS estimators. Using classical tools and results from multi-type branching processes [12], we show that the seed bias is negligible for the Generalized Least Squares (GLS) estimator and non-negligible for both the inverse probability weighted and Volz-Heckathorn (VH) estimators. In particular, we show that (i) above a critical threshold, VH converge to a non-trivial mixture distribution, where the mixture component depends on the seed node, and the mixture distribution is possibly multi-modal. Moreover, (ii) GLS converges to a Gaussian distribution independent of the seed node, under a certain condition on the Markov process. Numerical experiments with both simulated data and empirical social networks suggest that these results appear to hold beyond the Markov conditions of the theorems.

Ran Dai, Hyebin Song, Rina Foygel Barber, Garvesh Raskutti.

Source: Electronic Journal of Statistics, Volume 14, Number 1, 801--834.

Abstract:
We study the bias of the isotonic regression estimator. While there is extensive work characterizing the mean squared error of the isotonic regression estimator, relatively little is known about the bias. In this paper, we provide a sharp characterization, proving that the bias scales as $O(n^{-eta /3})$ up to log factors, where $1leq eta leq 2$ is the exponent corresponding to Hölder smoothness of the underlying mean. Importantly, this result only requires a strictly monotone mean and that the noise distribution has subexponential tails, without relying on symmetric noise or other restrictive assumptions.

Christopher Withers, Saralees Nadarajah

Source: Electron. J. Statist., Volume 4, 1--14.

Abstract:
We consider M estimation of a regression model with a nuisance parameter and a vector of other parameters. The unknown distribution of the residuals is not assumed to be normal or symmetric. Simple and easily estimated formulas are given for the dominant terms of the bias and skewness of the parameter estimates. For the linear model these are proportional to the skewness of the ‘independent’ variables. For a nonlinear model, its linear component plays the role of these independent variables, and a second term must be added proportional to the covariance of its linear and quadratic components. For the least squares estimate with normal errors this term was derived by Box [1]. We also consider the effect of a large number of parameters, and the case of random independent variables.

Feature screening is a powerful tool in processing high-dimensional data. When the sample size N and the number of features p are both large, the implementation of classic screening methods can be numerically challenging. In this paper, we propose a distributed screening framework for big data setup. In the spirit of 'divide-and-conquer', the proposed framework expresses a correlation measure as a function of several component parameters, each of which can be distributively estimated using a natural U-statistic from data segments. With the component estimates aggregated, we obtain a final correlation estimate that can be readily used for screening features. This framework enables distributed storage and parallel computing and thus is computationally attractive. Due to the unbiased distributive estimation of the component parameters, the final aggregated estimate achieves a high accuracy that is insensitive to the number of data segments m. Under mild conditions, we show that the aggregated correlation estimator is as efficient as the centralized estimator in terms of the probability convergence bound and the mean squared error rate; the corresponding screening procedure enjoys sure screening property for a wide range of correlation measures. The promising performances of the new method are supported by extensive numerical examples.

London : Cleanair, [1988?]

[London] : Cleanair, Campaña para un Medio Ambiente Libre de Humo, [198-?]

[London] : Cleanair, [1989?]

Vinod Venkatraman
Mar 9, 2011; 31:3712-3718
BehavioralSystemsCognitive

Gregor Thut
Sep 13, 2006; 26:9494-9502
BehavioralSystemsCognitive

Spanish translation of the BIS press release about the BIS Quarterly Review, September 2018

Biases in sensory perception can arise from both experimental manipulations and personal trait-like features. These idiosyncratic biases and their neural underpinnings are often overlooked in studies on the physiology underlying perception. A potential candidate mechanism reflecting such idiosyncratic biases could be spontaneous alpha band activity, a prominent brain rhythm known to influence perceptual reports in general. Using a temporal order judgment task, we here tested the hypothesis that alpha power reflects the overcoming of an idiosyncratic bias. Importantly, to understand the interplay between idiosyncratic biases and contextual (temporary) biases induced by experimental manipulations, we quantified this relation before and after temporal recalibration. Using EEG recordings in human participants (male and female), we find that prestimulus frontal alpha power correlates with the tendency to respond relative to an own idiosyncratic bias, with stronger α leading to responses matching the bias. In contrast, alpha power does not predict response correctness. These results also hold after temporal recalibration and are specific to the alpha band, suggesting that alpha band activity reflects, directly or indirectly, processes that help to overcome an individual's momentary bias in perception. We propose that combined with established roles of parietal α in the encoding of sensory information frontal α reflects complementary mechanisms influencing perceptual decisions.

SIGNIFICANCE STATEMENT The brain is a biased organ, frequently generating systematically distorted percepts of the world, leading each of us to evolve in our own subjective reality. However, such biases are often overlooked or considered noise when studying the neural mechanisms underlying perception. We show that spontaneous alpha band activity predicts the degree of biasedness of human choices in a time perception task, suggesting that alpha activity indexes processes needed to overcome an individual's idiosyncratic bias. This result provides a window onto the neural underpinnings of subjective perception, and offers the possibility to quantify or manipulate such priors in future studies.

Bank of England Working Papers by Nicola Garbarino and Benjamin Guin

As expected, the Education Department has delayed a rule that would require states to take a standardized approach in evaluating districts for minority bias in special education.

Education Week's top English-language learner stories on 2019 explored who's teaching the nation's English-learners and the struggles those educators encounter on the job, how the Trump administration's immigration policies affected students and their families and examined why more schools in the Un

Source: El tiempo - Una subida de 2°C altera la metilación del ADN y la expresión de genes claves para la supervivencia y el desarrollo. Este estudio ofrece una nueva visión sobre las consecuencias del cambio climático en los peces a través de modificaciones epigenéticas en todo el genoma

Few epidemiological studies, which included varied exposure assessment, have investigated the relation between drinking-water–disinfection byproducts such as trihalomethanes and hypospadias, and their results have been inconclusive.

Little evidence was found for an association between trihalomethanes and hypospadias, but a novel association between water consumption and hypospadias was found. Factors that influence maternal water consumption, or other contaminants in tap or bottled water, might explain this finding. (Read the full article)

Although several randomized trials have examined the efficacy of serotonin receptor inhibitors in the treatment of repetitive behaviors, there still remains clinical uncertainty as to whether these agents are effective in treating such behaviors in children and adults with autism spectrum disorders.

The goal of this meta-analysis was to examine randomized trials of serotonin receptor inhibitors for treating repetitive behaviors in autism spectrum disorders. Although a small but significant effect of these agents was observed, this effect is likely due to the selective publication of trial results. (Read the full article)

Patients who are fed via gastrostomy tube represent a heterogeneous, complex group of patients who may be at increased risk for kidney stones. To date, no previous studies have examined risk factors for kidney stone development in this population.

This case-control study of risk factors for urolithiasis in patients fed via gastrostomy suggests that topiramate use, urinary infections, and shorter length of time with a gastrostomy tube (possibly a marker for dehydration) are all associated with stone development. (Read the full article)

Some studies suggest a contribution of environmental exposures such as pesticides to risk of hypospadias, whereas others do not. One of the challenges that has limited current knowledge is the lack of detailed exposure data.

This study examined a more detailed assessment of exposure to pesticides than previous studies. Exposure assignments, whether to groups of chemicals, specific chemicals, or a composite involving a number of chemicals, showed a general lack of association with hypospadias. (Read the full article)

The incidence of invasive candidiasis in hospitalized infants is related to postnatal exposures, but large-scale studies relating the incidence of invasive candidiasis to changes in exposures over time are not available.

This study describes the association between the incidence of invasive candidiasis and changes in use of antifungal prophylaxis, empirical antifungal therapy, and broad-spectrum antibacterial antibiotics over time. (Read the full article)

Predicting high-risk populations in congenital diaphragmatic hernia (CDH) can help target care strategies. Prediction rules for infants with CDH often lack validation, are aimed at a prenatal population, and are of limited generalizability. We cannot currently discriminate the highest risk neonates during the crucial period shortly after birth.

This clinical prediction rule was developed and validated on an international database. It discriminates patients and high, intermediate, and low risk of mortality; is easy to apply; and is generalizable to most infants with CDH. (Read the full article)

Being bullied can lead to adverse physical and mental health outcomes. Individuals who experience a sudden traumatic event often have short-term disturbances in their sleep patterns. Ongoing trauma may result in extended periods of sleep disruption.

Being bullied in elementary school predicts parasomnias, such as nightmares and night terrors, years later. General practitioners, pediatricians, parents, and teachers may consider parasomnias as potential signs of being bullied. (Read the full article)

Source: www.brooklynpaper.com - Saturday, May 09, 2020
The owner of the iconic Park Slope events venue Grand Prospect Hall, Michael Halkias, died from COVID-19 on Wednesday. He was 82. Halkias’ death sent shockwaves throughout Brooklyn, where community leaders and friends remember him as a passionate, generous figure. “ He was a Brooklyn character for sure in the best sort of way,” said Randy Peers, president and CEO of the Brooklyn Chamber of Commerce. “He was larger than life.” Halkias and his wife Alice bought Grand Prospect Hall in 1984 and turned the extravagant Prospect Avenue building into an opulent catering hall. The space became a New York icon because of the its long-running, popular commercials, where Alice Halkias declares in a Greek accent, “We make your dreams come true!” Saturday Night Live spoofed the famous commercial in February of 2019, and the pair appeared on Jimmy Kimmel Live in October to remake the ad with Mets player Pete Alonso. Grand Prospect Hall, a Victorian banquet hall built in 1892, attracted big names such as dancer Fred Astaire and mafioso Al Capone during its heyday in the early 20th century — and boasted some of the borough’s oldest treasures, such as Brooklyn’s first reported elevator, which functions to this day. But by the 1980s, the landmarked building had fallen into disrepair: its walls had been painted black, molding had been stripped off the walls, and the chandeliers were gone, Halkias told Brooklyn Paper in 2004. The couple spent 20 yea

The rule requires states to use a standard method in determining if districts are biased in how they identify minority students, discipline them, or place them in restrictive settings.

Even the best intentioned educators often harbor blind spots, write Re-Imagining Migration's Adam Strom and Veronica Boix Mansilla.

Probiotics might provide an alternative approach for the control of oral candidiasis. However, studies on the antifungal activity of probiotics in the oral cavity are based on the consumption of yogurt or other dietary products, and there is a necessary to use appropriate biomaterials and specific strains to obtain probiotic formulations targeting local oral administration. In this study, we impregnated gellan gum, a natural biopolymer used as a food-additive, with a probiotic and investigated its antifungal activity against Candida albicans. Lactobacillus paracasei 28.4, a strain recently isolated from the oral cavity of a caries-free individual, was incorporated in several concentrations of gellan gum (0.6% to 1%). All tested concentrations could incorporate L. paracasei cells while maintaining bacterial viability. Probiotic/gellan formulations were stable for 7 days when stored at room temperature or 4°C. Long-term storage of bacteria-impregnated gellan gum was achieved when L. paracasei 28.4 was lyophilized. The probiotic/gellan formulations provided a release of L. paracasei cells over 24 hours that was sufficient to inhibit the growth of C. albicans with effects dependent on the cell concentrations incorporated into gellan gum. The probiotic/gellan formulations also had inhibitory activity against Candida spp. biofilms by reducing the number of Candida spp. cells (p < 0.0001), decreasing the total biomass (p = 0.0003), and impairing hyphae formation (p = 0.0002), compared to the control group which received no treatment. Interestingly, probiotic formulation of 1% w/v gellan gum provided an oral colonization of L. paracasei in mice with approximately 6 log of CFU/mL after 10 days. This formulation inhibited the C. albicans growth (p < 0.0001), prevented the development of candidiasis lesions (p = 0.0013), and suppressed inflammation (p = 0.0006) when compared to the mice not treated in the microscopic analysis of the tongue dorsum. These results indicate that gellan gum is a promising biomaterial and can be used as a carrier system to promote oral colonization for probiotics that prevent oral candidiasis.

If you're buying for someone who lives by the SoulCycle schedule, or wants to get in shape in 2020, this is the gift guide for you.

Education Week's top English-language learner stories on 2019 explored who's teaching the nation's English-learners and the struggles those educators encounter on the job, how the Trump administration's immigration policies affected students and their families and examined why more schools in the Un

When she began the biology program at Penn State Schuylkill, senior Dominique Varra thought she wanted to study plants. But after conducting field research studying gray catbirds with Luke Redmond, assistant professor of biology, she has discovered a passion for ornithology. And all of her accomplishments have inspired the next generation of scientists, chiefly her five-year-old daughter Hayden, who hopes to follow in her mother’s footsteps.

Children adapt their attitudes toward reading to conform to their classmates' perceived gender stereotypes, in ways that put boys at a disadvantage, according to a new study in the journal Child Development.

Deep-learning algorithms suffer from a fundamental problem: They can adopt unwanted biases from the data on which they're trained. In healthcare, this can lead to bad diagnoses and care recommendations.

California's proposed curriculum guide in ethnic studies is being sent back for substantial revision after a pileup of criticism that it's anti-Semitic.

Students of color don't need to get "grittier," writes New America's Jenny Muñiz. They need us to fix institutional racism.

A study by RTI International and Johns Hopkins University found evidence that teachers' assumptions and biases about their students' families can change after visiting their homes.

Todos los votantes elegibles de Delaware recibirán solicitudes de voto ausente por correo WILMINGTON, Del. – El gobernador John Carney firmó el jueves la decimoquinta modificación a su declaración de Estado de Emergencia, la cual prevé una reprogramación de las elecciones primarias presidenciales en Delaware para el 7 de julio. El Departamento de Elecciones de […]

Democrat Senator Dianne Feinstein is being lambasted for apparent double standards after attacking Tara Reade, the former Joe Biden staffer who alleges the Democrat presidential candidate sexually assaulted her.
Read Full Article at RT.com

   File(s): TSCMAA-CodeSample (76.6 MB) License: BSD 3-clause Optimized with..   OS: Windows® 10 ​ H...

Born in Lowell, Massachusetts, on March 13, 1930, Elias was the youngest of 13 brothers and sisters whose parents had migrated to the U.S. from the region later called the Republic of Lebanon