A long‐term fatty fish intervention improved executive function in inpatients with antisocial traits and a history of alcohol and drug abuse

The aim of the present study was to investigate the effects of fatty fish consumption on cognitive functioning in a group of inpatients characterized by antisocial behavior. Eighty‐three male forensic inpatients participated in this study. Participants were randomly assigned into a Fish or a Control group (e.g., meat, chicken, pork). One decision‐making task, the Iowa Gambling Task (IGT), and one planning task, the Tower of Hanoi (ToH), were administered before (pre‐test) and at the end of the intervention period (post‐test). For the IGT the Fish group showed improved performance from pre‐ to post‐ test. Moreover, the Fish group showed significantly better performance than the Control group on the IGT at post‐test. The Fish group also demonstrated improved performance from pre‐ to post‐test on the ToH; however, this was limited to participants with a history of substance abuse. Further, the improvement was only significant for tasks with high working memory load (5–7 move problems), and not for tasks with low working memory load (1–4 move problems). The Control group showed no improvement on any of the tasks regardless of alcohol or drug abuse history. The present study suggests that regular fatty fish consumption may improve executive functions in forensic inpatients with antisocial traits and a history of substance abuse. Thus, the current results may have important implications with regard to health care interventions.     

The Relationship Between Sluggish Cognitive Tempo,Subtypes of Attention-Deficit/Hyperactivity Disorder,and Anxiety Disorders

The objective of the present study was to examine the relationship between sluggish cognitive tempo (SCT), subtypes of attention-deficit/hyperactivity disorder (ADHD), and anxiety disorders (AnxDs). One hundred and forty-one children (90 males, 51 females) aged 7–13 years were assigned to four groups, i.e., referred children with comorbid AnxDs and ADHD (n = 25), ADHD (n = 39), AnxDs (n = 41), and nonreferred controls (n = 36). Furthermore we explored the association between SCT and several neurocognitive measures (reaction time, verbal memory, and spatial memory). Diagnoses were established using Kiddie-SADS P/L. SCT was assessed using a 17-item mother-reported questionnaire. SCT correlated significantly with inattentiveness, regardless of the subtype of ADHD. Furthermore, we found significant differences in the levels of SCT among the four groups, with the highest SCT scores observed in the comorbid group. SCT correlated with variability in spatial memory; in contrast, there was no correlation between SCT and reaction time.     

The role of early maladaptive schemas in predicting exposure and response prevention outcome for obsessive-compulsive disorder

This is the first study that explores whether early maladaptive schemas are related to treatment outcome for patients with obsessive-compulsive disorder (OCD). The sample consisted of 88 outpatients with a diagnosis of OCD who completed exposure and response prevention treatment. The Yale-Brown Obsessive-Compulsive Scale (Y-BOCS), the Beck Depression Inventory and Young Schema Questionnaire – Short Form were administered before and after treatment. Regression analyses using post-treatment Y-BOCS as the dependent variable indicated that higher scores on the abandonment schema at pre-treatment were related to poor outcome and explained 7% of the variance in symptoms at post-treatment. Higher scores on the self-sacrifice schema at pre-treatment were related to good outcome and explained 6% of the variance in obsessive-compulsive symptoms at post-treatment. During treatment, only changes in the failure schema were significantly related to good outcome and explained 18% of the variance in symptoms at post-treatment.     

An evidence-based group coping intervention for women living with HIV and history of childhood sexual abuse

Women living with HIV/AIDS and a history of childhood sexual abuse often exhibit sexual trauma symptoms and elevated rates of HIV-risk behaviors. In this paper, we describe a coping skills group intervention that reduced traumatic stress and sexual-risk behavior in a recent randomized clinical trial. We focused on clinical issues that emerged among female participants receiving the intervention. Clinical observations showed that recognizing connections between trauma, psychological distress, and high risk behaviors was a new and powerful experience for many participants. Participants successfully applied psychoeducational material, expressing an increased sense of power and control over their relationships and behaviors as they developed more adaptive cognitive and behavioral skills. Women expressed high levels of satisfaction with the intervention. Recommendations for clinical practice are provided.     

An exploratory mindset reduces preference for prototypes and increases preference for novel exemplars

Previous research has shown that prototypes of familiar categories are preferred over novel exemplars of familiar and unfamiliar categories. The present research demonstrates a reversal of this effect by simply inducing an exploratory mindset. Specifically, participants were asked to judge the attractiveness of dot patterns that represented prototypes of familiar categories, exemplars of familiar categories, or exemplars of novel categories. An exploratory mindset was manipulated by asking participants to imagine the stimuli as stars (versus as peas). Results show that participants in the exploration condition preferred exemplars of novel categories (thereby reversing the classical prototypicality effect), whereas participants in the control condition preferred prototypes. The role of mindsets and familiarity in attractiveness ratings is discussed.     

Generalized full-information item bifactor analysis

Full-information item bifactor analysis is an important statistical method in psychological and educational measurement. Current methods are limited to single-group analysis and inflexible in the types of item response models supported. We propose a flexible multiple-group item bifactor analysis framework that supports a variety of multidimensional item response theory models for an arbitrary mixing of dichotomous, ordinal, and nominal items. The extended item bifactor model also enables the estimation of latent variable means and variances when data from more than 1 group are present. Generalized user-defined parameter restrictions are permitted within or across groups. We derive an efficient full-information maximum marginal likelihood estimator. Our estimation method achieves substantial computational savings by extending Gibbons and Hedeker's (1992) bifactor dimension reduction method so that the optimization of the marginal log-likelihood requires only 2-dimensional integration regardless of the dimensionality of the latent variables. We use simulation studies to demonstrate the flexibility and accuracy of the proposed methods. We apply the model to study cross-country differences, including differential item functioning, using data from a large international education survey on mathematics literacy.