The longitudinal development of social and executive functions in late adolescence and early adulthood.

Our earlier work suggests that, executive functions and social cognition show protracted development into late adolescence and early adulthood (Taylor et al., 2013). However, it remains unknown whether these functions develop linearly or non-linearly corresponding to dynamic changes to white matter density at these age ranges. Executive functions are particularly in demand during the transition to independence and autonomy associated with this age range (Ahmed and Miller, 2011). Previous research examining executive function (Romine and Reynolds, 2005) and social cognition (Dumontheil et al., 2010a) in late adolescence has utilized a cross sectional design. The current study employed a longitudinal design with 58 participants aged 17, 18, and 19 years completing social cognition and executive function tasks, Wechsler Abbreviated Scale of Intelligence (Wechsler, 1999), Positive and Negative Affect Schedule (Watson et al., 1988), and Hospital Anxiety and Depression Scale (Zigmond and Snaith, 1983) at Time 1 with follow up testing 12-16 months later. Inhibition, rule detection, strategy generation and planning executive functions and emotion recognition with dynamic stimuli showed longitudinal development between time points. Self-report empathy and emotion recognition functions using visual static and auditory stimuli were stable by age 17 whereas concept formation declined between time points. The protracted development of some functions may reflect continued brain maturation into late adolescence and early adulthood including synaptic pruning (Sowell et al., 2001) and changes to functional connectivity (Stevens et al., 2007) and/or environmental change. Clinical implications, such as assessing the effectiveness of rehabilitation following Head Injury, are discussed.

Development of the scale of perceived social support in HIV (PSS-HIV).

Social support (SS) plays a key role for HIV/AIDS prevention and disease management. Numerous general and disease-specific SS instruments have been developed and perception of support has been increasingly considered, though no scales have been specifically developed to measure perceived social support (PSS) in HIV/AIDS. To help fill this gap a 12-item scale was developed. The study comprised 406 (HIV(+) and HIV(-)) participants from Chile and the UK. A principal component factor analysis yielded three factors explaining 77.0 % of the total variance: Belonging, Esteem and Self-development with Cronbach α of 0.759, 0.882 and 0.927 respectively and 0.893 on the full scale. The PSS-HIV is brief, easy-to-apply, available in English and Spanish and evaluates the perception of supportive social interactions. Further research is needed to corroborate its capacity to detect psycho-socio-immune interactions, its connection with Maslow's hierarchy of need theory and to evaluate its properties for different health states.

The typical developmental trajectory of social and executive functions in late adolescence and early adulthood.

Executive functions and social cognition develop through childhood into adolescence and early adulthood and are important for adaptive goal-oriented behavior (Apperly, Samson, & Humphreys, 2009; Blakemore & Choudhury, 2006). These functions are attributed to frontal networks known to undergo protracted maturation into early adulthood (Barker, Andrade, Morton, Romanowski, & Bowles, 2010; Lebel, Walker, Leemans, Phillips, & Beaulieu, 2008), although social cognition functions are also associated with widely distributed networks. Previously, nonlinear development has been reported around puberty on an emotion match-to-sample task (McGivern, Andersen, Byrd, Mutter, & Reilly, 2002) and for IQ in midadolescence (Ramsden et al., 2011). However, there are currently little data on the typical development of social and executive functions in late adolescence and early adulthood. In a cross-sectional design, 98 participants completed tests of social cognition and executive function, Wechsler Abbreviated Scale of Intelligence (Wechsler, 1999), Positive and Negative Affect Schedule (Watson, Clark, & Tellegen, 1988), Hospital Anxiety and Depression Scale (Zigmond & Snaith, 1983), and measures of pubertal development and demographics at ages 17, 18, and 19. Nonlinear age differences for letter fluency and concept formation executive functions were found, with a trough in functional ability in 18-year-olds compared with other groups. There were no age group differences on social cognition measures. Gender accounted for differences on 1 scale of concept formation, 1 dynamic social interaction scale, and 2 empathy scales. The clinical, developmental, and educational implications of these findings are discussed.

Individual differences and preference for dietary fat using the Fat Preference Questionnaire(©) in a UK sample.

Dietary fat is a fundamental contributor to the selection of food largely due to its pleasant orosensory characteristics. Consequently high fat foods are often over eaten leading to weight gain and in severe cases, obesity. This paper presents two studies investigating preference for fat. Study 1 is a large-scale questionnaire study which produced both UK normative data for the Fat Preference Questionnaire(©) and the first normative data for males. The results suggest that the Fat Preference Questionnaire(©) is a reliable and valid measure of fat preference in a UK population, although some changes to the measure are recommended. Female data was found to closely mirror the existing US data. Sex differences were established in scores of preference for high fat foods and quantities eaten. Study 2 investigated the extent to which individual difference in eating behaviour, body mass and personality predict preference for dietary fat. High scores in Dietary Restraint were found to be the best predictor of high fat intake, especially dietary restraint specific to fat. Personality weakly predicted preference for dietary fat, and high BMI was associated with high intake of fat.

Executive function in children with high and low attentional skills: correspondences between behavioural and cognitive profiles.

Cognitive performance was compared between two groups of typically developing children, who had been observed and rated as differing significantly in their attentional skills at school. The participants were 24 8- and 9-year-old children scoring poorly relative to peers, on a classroom observation scale and teacher rating scale for attention, hyperactivity, and impulsivity [low-attentional skills (LAS) group] and 24 sex- and age-matched children scoring at a high level compared to peers [high-attentional skills (HAS) group]. The two groups were compared on a series of cognitive tasks to assess executive function (EF). The LAS group performed within the typical range yetat a significantly lower level than the HAS group on the majority of the EF tasks administered, namely working memory and inhibition measures, even though there were no significant differences between the groups on a measure of intellectual ability. Working memory measures followed by measures of inhibition emerged as the best predictors of group membership. These findings provide empirical evidence that there are individual differences in attentional skills. Specifically, that there is a relationship between behavioural inattention, hyperactivity, and impulsivity and cognitive performance on working memory and inhibitory control tasks.

Executive function deficits in short-term abstinent cannabis users.

OBJECTIVES: Few cognitive tasks are adequately sensitive to show the small decrements in performance in abstinent chronic cannabis users. In this series of three experiments we set out to demonstrate a variety of tasks that are sufficiently sensitive to show differences in visual memory, verbal memory, everyday memory and executive function between controls and cannabis users. METHODS: A series of three studies explored cognitive function deficits in cannabis users (phonemic verbal fluency, visual recognition and immediate and delayed recall, and prospective memory) in short-term abstinent cannabis users. Participants were selected using snowball sampling, with cannabis users being compared to a standard control group and a tobacco-use control group. RESULTS: The cannabis users, compared to both control groups, had deficits on verbal fluency, visual recognition, delayed visual recall, and short- and long-interval prospective memory. There were no differences for immediate visual recall. CONCLUSIONS: These findings suggest that cannabis use leads to impaired executive function. Further research needs to explore the longer term impact of cannabis use.

A practical guide to the e-mail interview.

The e-mail interview is a novel technique that has a number of advantages over traditional interviewing, but there are also some disadvantages. In this methodological article, the authors review the issues surrounding the use of the e-mail interview, providing a concrete example of its use, that of interviewing people with alopecia areata regarding psychological issues associated with the disorder. The authors show in the article that the e-mail interview is an effective interview technique but that users must take account of a number of sensitive issues, and there are a number of serious disadvantages that limit its use to specific areas. The e-mail interview cannot be used simply as a cheap alternative to face-to-face interviews in all circumstances.

Psychosocial aspects of andrologic disease.

This article reviews the research relating to the psychosocial aspects of andrologic disease, focusing on infertility, hypospadias, and erectile dysfunction because these diseases draw out the key areas of psychosocial interest. This is the case with the development of men who have andrologic disease and the problems they face developing relationships. Psychosocial issues are often about the perceptions that men and women have regarding androgenic disorders rather than the disorder itself. Psychological problems include anxiety, depression, and social phobias. In more serious cases, psychological problems can affect masculinity, selfhood, and identity. Clinical psychologists and other psychotherapists can offer some assistance regarding these perceptions, but where there are problems relating to personality and coping styles, these may be more difficult to overcome. More research is required to understand the specific psychosocial consequences of androgenic disorders.