Emergent Power Hierarchies and Group Performance

In newly formed groups, informal hierarchies emerge automatically and readily. In this study, we argue that emergent group hierarchies enhance group performance (Hypothesis 1) and we assume that the more the power hierarchy within a group corresponds to the task‐competence differences of the individual group members, the better the group performs (Hypothesis 2). Twelve three‐person groups and 28 four‐person groups were investigated while solving the Winter Survival Task. Results show that emerging power hierarchies positively impact group performance but the alignment between task‐competence and power hierarchy did not affect group performance. Thus, emergent power hierarchies are beneficial for group performance and although they were on average created around individual group members' competence, this correspondence was not a prerequisite for better group performance.     

Exercise can improve physical self perceptions in adolescents with low motor competence

Adolescents with low motor competence have diminished perceptions of their physical self and tend to avoid physical activities. This study examined the outcomes of an exercise intervention that focused on improving aerobic fitness, strength, and self-perceptions in the physical domain in adolescents with poor motor coordination. The sample included 35 adolescents with low motor competence, comprising boys (n = 25) and girls (n = 10) ranging in age from 13 to 17 years, who attended two sessions per week in the 13 week exercise intervention study (AMP it up). Physical self-perceptions were measured before and after the intervention using the Physical Self Perception Profile and Perceived Importance Profile. Significant improvements in perceived Physical Condition, Attractive Body and Physical Strength sub domain scores were identified between pre and post-test. Adjusting for age, gender, BMI and attendance, regression analyses revealed that Attractive Body was the strongest predictor of Physical Self Worth at pre-test, joined by Physical Condition at post-test. This exercise intervention had a positive impact on adolescent physical self-perceptions, in particular males, with improvements in those sub domains specifically related to the exercise program. Changes in specific aspects of Physical Self Worth can be facilitated by exercise interventions, after a relatively short period of time, in adolescents with poor motor coordination.     

A common representational system governed by Weber's law: nonverbal numerical similarity judgments in 6-year-olds and rhesus macaques

This study compared nonverbal numerical processing in 6-year-olds with that in nonhuman animals using a numerical bisection task. In the study, 16 children were trained on a delayed match-to-sample paradigm to match exemplars of two anchor numerosities. Children were then required to indicate whether a sample intermediate to the anchor values was closer to the small anchor value or the large anchor value. For two sets of anchor values with the same ratio, the probability of choosing the larger anchor value increased systematically with sample number, and the psychometric functions superimposed when plotted on a logarithmic scale. The psychometric functions produced by the children also superimposed with the psychometric functions produced by rhesus monkeys in an analogous previous experiment. These examples of superimposition demonstrate that nonverbal number representations, even in children who have acquired the verbal counting system, are modulated by Weber's law.     

Relations of Parenting and Negative Life Events to Cognitive Diatheses for Depression in Children

In a sample of 299 children (grades 2, 4, and 6), we examined parenting and negative life events as predictors of depressive cognitions, specifically low self-perceived competence, depressive cognitive schemas, and depressogenic attributional style. We also examined developmental trends in these relations. Children completed measures of parenting, negative life events, and depressive cognitions. Parents also completed measures of parenting and negative life events. Consistent with our hypotheses, negative parenting and negative life events corresponded with higher levels of depressive cognitions, whereas positive parenting corresponded with lower levels of depressive cognitions. The relations between negative parenting and negative automatic thoughts were stronger for older children. Theoretical and practical implications are discussed.     

Resilient Adolescent Adjustment Among Girls: Buffers of Childhood Peer Rejection and Attention-Deficit/Hyperactivity Disorder

Examined a risk-resilience model of peer rejection and attention-deficit/hyperactivity disorder (ADHD) in a 5-year longitudinal study of 209 ethnically and socioeconomically diverse girls aged 6-13 at baseline and 11-18 at follow-up. Risk factors were childhood ADHD diagnosis and peer rejection; hypothesized protective factors were childhood measures of self-perceived scholastic competence, engagement in goal-directed play when alone, and popularity with adults. Adolescent criterion measures were multi-informant composites of externalizing and internalizing behavior plus indicators of academic achievement, eating pathology, and substance use. ADHD and peer rejection predicted risk for all criterion measures except for substance use, which was predicted by ADHD only. ADHD and peer rejection predicted lower adolescent academic achievement controlling for childhood achievement, but they did not predict adolescent externalizing and internalizing behavior after controlling for baseline levels of these constructs. Regarding buffers, self-perceived scholastic competence in childhood (with control of academic achievement) predicted resilient adolescent functioning. Contrary to hypothesis, goal-directed play in childhood was associated with poor adolescent outcomes. Buffers were not found to have differential effectiveness among girls with ADHD relative to comparison girls.     

Engaging Australian Aboriginal youth in mental health services

It is currently estimated that up to 40% of Aboriginal youth (aged 13–17) will experience some form of mental health problem within their lifetime. Of greater concern is the evidence that indicates that Aboriginal youth fail to access mental health services commensurate with this need. This is due, in part, to the characteristically monocultural nature of service delivery of existing services. This paper overviews a model that has been developed specifically for the engagement of Aboriginal youth (aged 13–17 years) in mental health settings. Importantly, a mix of urban (N = 43) and rural (N = 68) Aboriginal youth were represented within the sample to determine its efficacy across different language and tribal groups. The model proved to be effective in engaging 97% of Aboriginal youth (n = 108), with only a small number not effectively engaged (n = 3). The model provides a foundation for the further development of evidence‐based models of best practice that have so far provided to be elusive within this complex field.     

Evidence-Based Practice in Psychology: An Ethical Framework for Graduate Education,Clinical Training,and Maintaining Professional Competence

Evidence-based practice is often acknowledged as the future state of psychology, yet those graduate students who will soon be applying such practices tend to hold several misconceptions about the major components within this framework. This review highlights implications for graduate education, clinical training, and professional competence in light of the movement toward evidence-based practice in psychology. These implications are discussed in relation to the close parallel between the major components of the evidence-based framework and the current Ethical Principles of Psychologists and Code of Conduct. The evidence-based framework is discussed as an ideology that promotes lifelong learning and best prepares graduate students for ethical clinical practice throughout their careers as psychologists.     

Ethical Challenges in the Treatment of Individuals With Intellectual Disabilities

The effective provision of psychotherapy services to individuals with intellectual disability requires consideration of ethical issues related to clinical competence, access to services, obligations to multiple parties, guardianship, and appropriate assessment practices. This article provides an overview of major ethical considerations with guidance for clarifying and resolving common ethical concerns. Psychologists are encouraged to expand access to psychotherapy services for this population while maintaining awareness of potential modifications, training needs, and boundaries of professional competence. The authors provide recommendations and resources for effective and ethical treatment of psychotherapy clients with intellectual disabilities.     

Decisional Capacity Among Minors With HIV: A Model for Balancing Autonomy Rights With the Need for Protection

The purpose of this article is threefold: (a) to describe the relevant ethical and legal issues associated with decisional capacity among minors and to discuss the importance of these concepts for children and adolescents living with HIV, (b) to provide a framework for assessing the decisional capacity of children and adolescents with HIV, and (c) to present a model for thinking about how to use this assessment data to guide action along the protection-autonomy continuum.