Bayesian techniques for analyzing group differences in the Iowa Gambling Task: A case study of intuitive and deliberate decision-makers

The Iowa Gambling Task (IGT) is one of the most popular experimental paradigms for comparing complex decision-making across groups. Most commonly, IGT behavior is analyzed using frequentist tests to compare performance across groups, and to compare inferred parameters of cognitive models developed for the IGT. Here, we present a Bayesian alternative based on Bayesian repeated-measures ANOVA for comparing performance, and a suite of three complementary model-based methods for assessing the cognitive processes underlying IGT performance. The three model-based methods involve Bayesian hierarchical parameter estimation, Bayes factor model comparison, and Bayesian latent-mixture modeling. We illustrate these Bayesian methods by applying them to test the extent to which differences in intuitive versus deliberate decision style are associated with differences in IGT performance. The results show that intuitive and deliberate decision-makers behave similarly on the IGT, and the modeling analyses consistently suggest that both groups of decision-makers rely on similar cognitive processes. Our results challenge the notion that individual differences in intuitive and deliberate decision styles have a broad impact on decision-making. They also highlight the advantages of Bayesian methods, especially their ability to quantify evidence in favor of the null hypothesis, and that they allow model-based analyses to incorporate hierarchical and latent-mixture structures.     

Are Second Person Masculine Generics Easier to Process for Men than for Women? Evidence from Polish

Journal of Psycholinguistic Research - In Polish, it is obligatory to mark feminine or masculine grammatical gender on second-person singular past tense verbs (e.g., Dosta?a? list...     

Perceived Social Status and Suicidal Ideation in Maltreated Children and Adolescents

Research on Child and Adolescent Psychopathology - Recent decades have seen an alarming increase in rates of suicide among young people, including children and adolescents (“youth”)....     

Increasing Vegetable Consumption in Students with Autism Spectrum Disorder Using Pre-meal Presentation: A Preliminary Analysis

This study examined the effect of pre-meal presentation on the consumption of vegetables in a sample of 16 students with autism spectrum disorder (ASD). These 16 students (75% male; mean age?=?13 years; age range 8–18 years) were enrolled in a private school serving children with autism. School staff offered participants 10 small pieces of two vegetables during lunch (baseline) or prior to lunch (pre-meal presentation). Observers recorded the number of bites students consumed. We used an A–B–A–B design to examine the effects of pre-meal presentation. Results were evaluated using a mixed-method, individual- and group-level, analysis. Pre-meal presentation resulted in increased vegetable consumption for 9 of the 16 participants. A reversal to baseline demonstrated expected decreases in bites consumed, and the subsequent return to intervention demonstrated expected increases in bites consumed. One-way repeated measures ANOVA compared bites consumed per session across 10 four-session study blocks and found significant differences between these two conditions. Paired comparisons revealed no change in bites consumed per session from baseline to intervention block #1, but significant increases from baseline to intervention #2 and all subsequent intervention blocks. Our results suggested pre-meal presentation can serve as a low-cost, low-effort intervention for increasing vegetable consumption for some children with ASD.

     

Stability Balls and Student on-Task Behavior

Stability balls have become a common option for alternative seating in classrooms. While the social validity of stability ball classroom seating remains high among students and teachers, findings on the effectiveness of this alternative seating method are mixed. This is particularly true when the intent of the intervention is to increase student on-task behavior. This study examined the effects of stability ball seating on students’ on-task behavior in a general education setting, using a within-subjects repeated measures design. Researchers observed twenty-four third-grade students in a public-school classroom across three conditions: all chairs, all balls, or choice. Across observation days, the study controlled for time of day, teacher, and classroom environment. Results indicate students are on-task less frequently when sitting on a stability ball. Student reports on social validity replicated prior findings; students found the stability ball to be desirable and easy to use.

     

Neurostructural and Neurophysiological Correlates of Multiple Sclerosis Physical Fatigue: Systematic Review and Meta-Analysis of Cross-Sectional Studies

Neuropsychology Review - Fatigue is one of the most debilitating symptoms for people with multiple sclerosis (PwMS). By consolidating a diverse and conflicting evidence-base, this systematic review...     

Constructing the Citizen

Discussions of citizenship and citizenship education have been conducted largely within the worldview of stable, Western societies and have been based on psychological models that emphasize individual cognition. The concepts of citizenship that evolved in this context have become taken for granted. But during the past decade, different concepts of citizenship have arisen from emergent democracies, from societies in transition, from the dissolution of the left-right spectrum in Western society, and from a changing perspective in psychological theory that attends to language and to social and cultural context. These developments have implications for defining the goals of citizenship education and for formulating educational programs, particularly in relation to identity, positioning, narratives, and efficacy.     

A Model of Racialized Sexual Harassment of Women in the UK Workplace

This paper examines Black Asian and Minority Ethnic (BAME) women’s experiences of sexual harassment in the UK workplace from the perspective of frequency and types of sexual harassment and characteristics of the harasser; ethnic and cultural influences; power, fear of reprisals, and reporting behavior. Using a snowballing technique, in depth interviews with 17 BAME women who had experienced or witnessed BAME sexual harassment reported that they were frequently sexually harassed by men from the same ethnic background. The fear of job loss, reprisals from male family members and negative organizational consequences resulted in over three quarters of the women not reporting incidents. Key questions regarding the factors and influences that are inherent in racialized sexual harassment are integrated into a model.     

Speeded induction under uncertainty: The influence of multiple categories and feature conjunctions

When people are uncertain about the category membership of an item (e.g., Is it a dog or a dingo?), research shows that they tend to rely only on the dominant or most likely category when making inductions (e.g., How likely is it to befriend me?). An exception has been reported using speeded induction judgments where participants appeared to use information from multiple categories to make inductions (Verde, Murphy, &; Ross, 2005). In two speeded induction studies, we found that participants tended to rely on the frequency with which features co-occurred when making feature predictions, independently of category membership. This pattern held whether categories were considered implicitly (Experiment 1) or explicitly (Experiment 2) prior to feature induction. The results converge with other recent work suggesting that people often rely on feature conjunction information, rather than category boundaries, when making inductions under uncertainty.     

Predictors and Correlates of Completing Behavioral Parent Training for the Treatment of Oppositional Defiant Disorder in Pediatric Primary Care

This study examined the role of pretreatment demographic and clinical predictors of attendance as well as barriers to treatment and consumer satisfaction on attendance at therapist-led parent training with 86 families of children ages 3 to 6 years conducted in pediatric primary care settings. Only socioeconomic status (SES) and minority group membership were significantly associated with not completing treatment. Using optimal data analysis procedures, high SES correctly predicted treatment completion 83.6% of the time. Being from a low SES, minority group family correctly predicted noncompletion of treatment 72.7% of the time, but being from a low SES, white family predicted treatment completion 80% of the time. Since barriers to treatment, such as stressors, obstacles to treatment, and treatment demands were unrelated to attendance in the present study, other factors related to social class and minority status that could contribute to better consumer satisfaction and treatment attendance must be investigated.