Do ADHD and Executive Dysfunctions,Measured by the Hebrew Version of Behavioral Rating Inventory of Executive Functions (BRIEF), Completely Overlap?

The centrality of executive function deficits (EFD) in attention deficit/ hyperactivity disorder (ADHD) is well accepted albeit EFD is not synonymous with ADHD. The purpose of the present study was to examine the extent to which ADHD and EF overlap and to validate the Hebrew version of the Behavioral Rating Inventory of Executive Functions (BRIEF). Parents of 178 children with and without ADHD completed the BRIEF and the ADHD-Rating Scale. Significant differences were found between groups on each scale even after controlling for the other scale. Internal consistency analysis supported the reliability of the Hebrew version of the BRIEF. We conclude that ADHD and Executive Dysfunctions do not completely overlap.     

A Refutation of Cartesian Fallibilism

According to a doctrine that I call “Cartesianism”, knowledge – at least the sort of knowledge that inquirers possess – requires having a reason for belief that is reflectively accessible as such. I show that Cartesianism, in conjunction with some plausible and widely accepted principles, entails the negation of a popular version of Fallibilism. I then defend the resulting Cartesian Infallibilist position against popular objections. My conclusion is that if Cartesianism is true, then Descartes was right about this much: for S to know that p, S must have reasons for believing that p which are such that S can know, by reflection alone, that she has those reasons, and that she could not possibly have those reasons if p is not true. Where Descartes went wrong was in thinking that our ordinary, fallible, non‐theologically grounded sources of belief (e.g., perception, memory, testimony), cannot provide us with such reasons.     

The Mullen scales of early learning: ceiling effects among preschool children

Two cognitive tests were administered to typically developing children (36–67 months): the Mullen Scales of Early Learning (MSEL), which is appropriate for very young children and thus often used in research with atypical samples (e.g., children with Autism Spectrum Disorder), and the Kaufman Assessment Battery for Children (K-ABC). This was done in order to re-examine possible MSEL ceiling effects in a new sample and achieve a more in-depth understanding of these ceiling effects, if indeed present. Results indicated that among children ranging in age from 51 to 68 months, MSEL scores were significantly lower than K-ABC scores, and that with increasing age the number of children who completed the MSEL without establishing a ceiling level increased. Our results indicated that the MSEL scores are affected by ceiling effects and, therefore, the test underestimates cognitive abilities among older and more cognitively able children.     

Valence resolution of ambiguous facial expressions using an emotional oddball task

Previous research suggests that neural and behavioral responses to surprised faces are modulated by explicit contexts (e.g., "He just found $500"). Here, we examined the effect of implicit contexts (i.e., valence of other frequently presented faces) on both valence ratings and ability to detect surprised faces (i.e., the infrequent target). In Experiment 1, we demonstrate that participants interpret surprised faces more positively when they are presented within a context of happy faces, as compared to a context of angry faces. In Experiments 2 and 3, we used the oddball paradigm to evaluate the effects of clearly valenced facial expressions (i.e., happy and angry) on default valence interpretations of surprised faces. We offer evidence that the default interpretation of surprise is negative, as participants were faster to detect surprised faces when presented within a happy context (Exp. 2). Finally, we kept the valence of the contexts constant (i.e., surprised faces) and showed that participants were faster to detect happy than angry faces (Exp. 3). Together, these experiments demonstrate the utility of the oddball paradigm to explore the default valence interpretation of presented facial expressions, particularly the ambiguously valenced facial expression of surprise.     

Effects of anchoring and adjustment in the evaluation of product pricing

Anchoring and adjustment comprise a heuristic that creates expectations. Two types of anchors were applied on participants' evaluation of products: the price reference of the product (maximum, minimum, or no price reference) and the context in which the products were evaluated (the prestige of the shopping center). Results showed that both factors anchored evaluations of products' value. Context effects were explained by the different expectations of visitors in prestigious (looking for quality) and less prestigious (seeking a bargain) centers.     

Epistemology Factualized: New Contractarian Foundations for Epistemology

Many epistemologists are interested in offering a positive account of how it is that many of our common sense beliefs enjoy one or another positive epistemological status (e.g., how they are warranted, justified, reasonable, or what have you). A number of philosophers, under the influence of Wittgenstein and/or J. L. Austin, have argued that this enterprise is misconceived. The most effective version of this argument is to be found in Mark Kaplan’s paper “Epistemology on Holiday”. After explaining what this criticism amounts to and why it is important, I then respond to it. My response is based upon, and is intended to display the explanatory power of, a contractarian account of our practice of epistemic appraisal.