Preliminary evidence for reduced posterror reaction time slowing in hyperactive/inattentive preschool children

Background: Attention deficit/hyperactivity disorder (ADHD) has been associated with deficits in self-regulatory cognitive processes, some of which are thought to lie at the heart of the disorder. Slowing of reaction times (RTs) for correct responses following errors made during decision tasks has been interpreted as an indication of intact self-regulatory functioning and has been shown to be attenuated in school-aged children with ADHD. This study attempted to examine whether ADHD symptoms are associated with an early-emerging deficit in posterror slowing. Method: A computerized two-choice RT task was administered to an ethnically diverse sample of preschool-aged children classified as either “control” (n = 120) or “hyperactive/inattentive” (HI; n = 148) using parent- and teacher-rated ADHD symptoms. Analyses were conducted to determine whether HI preschoolers exhibit a deficit in this self-regulatory ability. Results: HI children exhibited reduced posterror slowing relative to controls on the trials selected for analysis. Supplementary analyses indicated that this may have been due to a reduced proportion of trials following errors on which HI children slowed rather than due to a reduction in the absolute magnitude of slowing on all trials following errors. Conclusions: High levels of ADHD symptoms in preschoolers may be associated with a deficit in error processing as indicated by posterror slowing. The results of supplementary analyses suggest that this deficit is perhaps more a result of failures to perceive errors than of difficulties with executive control.     

Illusory lightness in the Delboeuf figure

A white disk presented inside a small concentric circle (a display like the Delboeuf figure) looks lighter than when inside a larger one. The magnitude of the effect was measured with 20 observers (10 women, 10 men; ages 19 to 26 years). The decrements in luminance of the disk inside the smaller circle, in order to match the lightness of the disk inside the larger circle, are reported for three different grey backgrounds and correspond to 9.13, 10.33, and 10.46%.     

Adapted to explore: Reinforcement learning in Autistic Spectrum Conditions

Recent studies have recorded a tendency of individuals with Autism Spectrum Conditions (ASC) to continually change their choices in repeated choice tasks. In the current study we examine if this finding implies that ASC individuals have a cognitive style that facilitates exploration and discovery. Six decision tasks were administered to adolescents with ASC and matched controls. Significant differences in shifting between choice options appeared in the Iowa Gambling task (Bechara, Damasio, Damasio, & Anderson, 1994). A formal cognitive modeling analysis demonstrated that for about half of the ASC participants the adaptation process did not conform to the standard reinforcement learning model. These individuals were only coarsely affected by choice-outcomes, and were more influenced by the exploratory value of choices, being attracted to previously un-explored alternatives. An examination of the five simpler decision tasks where the advantageous option was easier to determine showed no evidence of this pattern, suggesting that the shifting choice pattern is not an uncontrollable tendency independent of task outcomes. These findings suggest that ASC individuals have a unique adaptive learning style, which may be beneficial is some learning environment but maladaptive in others, particularly in social contexts.     

When and why is helping others good for well‐being? The role of belief in reciprocity and conformity to society's expectations

This research investigates the relation between informal help and subjective well‐being and its underlying mechanisms using a cross‐national perspective. We focus on two potential mechanisms derived from the self‐determination theory and conformity to the social norms literature. From the standpoint of self‐determination theory, helping others is good for well‐being if it is intrinsically motivated, rather than driven by the expectation of reciprocity. On the other hand, from the perspective of the conformity literature, helping others is associated with a higher well‐being when it is linked to the benefits of social conformity, such as social approval. We tested these hypotheses using the data from a total of 23 countries. The results provided support for both mechanisms. First, we found that the lower individuals' beliefs in reciprocity are, the stronger is the positive effect of self‐reported helping behavior on their well‐being. Second, helping behavior was more strongly related to life satisfaction in countries where providing help represents a strong social norm (measured with two different cultural indicators). We conclude that both individual‐ and culture‐level mechanisms account for the relation between prosocial behavior and well‐being. Copyright © 2015 John Wiley & Sons, Ltd.     

What drives consumer expectations for institutional food? Identifying antecedents of normative and predictive expectations in baby boomers

Consumer expectations play a crucial role in shaping consumer experiences, and it is important to understand what factors contribute to these expectations. However, there is limited research on the factors that influence expectations, particularly internal factors. Additionally, few studies differentiate between types of expectations and their underlying causes. This study focuses on normative and predictive expectations related to institutional food and examines how individual psychological factors (such as entitlement, subjective knowledge, and sensitivity to disconfirmation) and sociocultural factors (like word of mouth and temporal focus) influence these expectations. The researchers used surveys to collect data from two different groups of baby boomers in Norway, with a total of 300 participants in each group. The findings reveal that normative and predictive expectations for institutional food differ in their content, and individual psychological and sociocultural factors affect different types of expectations. Individual psychological factors have a stronger influence on normative expectations, whereas sociocultural factors primarily impact predictive expectations. Further research should explore the relationship between the content of expectations and their drivers in other contexts. This study contributes to our understanding of the factors that shape consumer expectations, particularly in non-hedonic consumption experiences.     

THE DEPENDENCY NEEDS AND PERCEIVED AVAILABILITY AND ADEQUACY OF RELATIONSHIPS IN FEMALE ADOLESCENT SUICIDE ATTEMPTERS

Traditional theories about female adolescent suicide attempters view them as experiencing difficulty in achieving adequate separation-individuation. However, recent work on female adolescence suggests that achieving greater interdependency within relationships rather than increased independence from them is an important goal for nonclinical nonsuicidal female adolescents. We investigated both dependency needs and the perceived availability and adequacy of relationships in 21 female adolescent attempters and 23 nonattempters. Dependency needs did not significantly differentiate suicide attempters from nonattempters. Attempters, however, did report both a smaller social network and fewer intimate relationships than nonattempters, as well as less satisfaction with these relationships. These preliminary results suggest that more research is required to establish whether dependency needs are indeed causally related to the female adolescents' suicide attempts. Future research should also investigate other risk factors such as relational dissatisfaction, familial suicide attempts, and abuse.     

How temporal distance from past selves influences self‐perception

The present studies examine how perceived temporal distance from past selves influences perceptions of the current self. Participants recalled their past self either at age 9 or 15. These two past selves differ in levels of identification with gender and thus denote different standards of comparison. Three hypotheses were tested. Temporal distance should determine whether recalled past selves produce assimilation or contrast effects on the current self. Second, temporal comparison effects should be weaker when people recall their past in terms of stable, relatively enduring characteristics (e.g. traits). Third, past selves should to a greater extent be biased by stereotypical knowledge about former lifetime periods the farther away individuals feel from past selves. Past selves coloured by stereotypical knowledge are more extreme and should thus produce stronger judgemental effects on the current self. The results supported the hypotheses. Implications for autobiographical remembering are discussed. Copyright © 2007 John Wiley & Sons, Ltd.     

Atypical birdsong and artificial languages provide insights into how communication systems are shaped by learning,use, and transmission

In this article, I argue that a comparative approach focusing on the cognitive capacities and behavioral mechanisms that underlie vocal learning in songbirds and humans can provide valuable insights into the evolutionary origins of language. The experimental approaches I discuss use abnormal song and atypical linguistic input to study the processes of individual learning, social interaction, and cultural transmission. Atypical input places increased learning and communicative pressure on learners, so exploring how they respond to this type of input provides a particularly clear picture of the biases and constraints at work during learning and use. Furthermore, simulating the cultural transmission of these unnatural communication systems in the laboratory informs us about how learning and social biases influence the structure of communication systems in the long run. Findings based on these methods suggest fundamental similarities in the basic social–cognitive mechanisms underlying vocal learning in birds and humans, and continuing research promises insights into the uniquely human mechanisms and into how human cognition and social behavior interact, and ultimately impact on the evolution of language.