How Risk is Perceived, Constructed and Interpreted by Clients in Clinical Genetics, and the Effects on Decision Making: Systematic Review

As an individual’s understanding of their genetic risk may influence risk management decisions, it is important to understand the ways in which risk is constructed and interpreted. We systematically reviewed the literature, undertaking a narrative synthesis of 59 studies presenting data on the ways in which individuals perceive, construct and interpret their risk, and the subsequent effects. While most studies assessed perceived risk quantitatively, the combined evidence suggests individuals find risk difficult to accurately quantify, with a tendency to overestimate. Rather than being a stand-alone concept, risk is something lived and experienced and the process of constructing risk is complex and influenced by many factors. While evidence of the effects of perceived risk is limited and inconsistent, there is some evidence to suggest high risk estimations may adversely affect health and lead to inappropriate uptake of medical surveillance and preventative measures by some individuals. A more focused approach to research is needed with greater exploration of the ways in which risk is constructed, along with the development of stronger theoretical models, to facilitate effective and patient-centered counseling strategies.     

Contextual memory deficits observed in mice overexpressing small conductance Ca2+-activated K+ type 2 (KCa2.2, SK2) channels are caused by an encoding deficit

Hippocampal-dependent synaptic plasticity and memory are modulated by apamin-sensitive small conductance Ca2+-activated K+ (SK) channels. Transgenic mice overexpressing SK2 channels (SK2+/T mice) exhibit marked deficits in hippocampal memory and synaptic plasticity, as previously reported. Here, we examined whether SK2 overexpression affects the encoding or retention of contextual memory. Compared with wild-type littermates, SK2+/T mice exhibited significantly less context-dependent freezing 10 min and 24 h after conditioning. Interestingly, this contextual memory impairment was eliminated if SK2+/T mice were permitted longer pre-exposure to the conditioning chamber. These data support converging evidence that SK2 channels restrict the encoding of hippocampal memory.     

Further Support for Multidimensionality Within the Rosenberg Self-Esteem Scale

Although the Rosenberg Self Esteem Scale is one of the most widely used measures of global self esteem, the underlying measurement structure of the items is still debated. In this study the dimensionality of a six item version of the Rosenberg Self Esteem Scale included in the National Population Health Survey of Canada was examined using nested confirmatory factor analyses. The results indicate that the six items measure two correlated dimensions of global self esteem. The first dimension appears to represent a measure of self competence, and the second is interpreted as a measure of self liking. Subsequent tests of predictive power and discriminant validity supported the two dimension interpretation. The two dimensions had substantially different relationships with theoretically related measures of anxiety, negative affect and happiness. In addition to these different correlations, latent variable regressions indicated that the self-competency factor consistently suppressed irrelevant variance in the self liking factor when predicting anxiety, negative affect and happiness.     

Stress in youth sport: A developmental investigation of tennis parents

ObjectiveThis study investigated the stage-specific stressors experienced by British tennis parents whose children were situated either in the sampling, specializing or investment stages of participation in the sport [Côtè, J. (1999). The influence of the family in the development of talent in sport. The Sport Psychologist, 13, 395–417].Design and methodA qualitative design was employed with semi-structured interviews conducted with twenty two British tennis parents; six parents representing each of the first two stages of sports participation and ten representing the investment stage. Data was analyzed through a process of inductive content analysis following the method proposed by Miles and Huberman [Miles, M. B., & Huberman, A. M. (1994). Qualitative data analysis. London: Sage]. Data matrices were developed for each category of parent to allow for the comparison of the data between themes.Results and conclusionThree general dimensions of parental stressor emerged: Organizational, Competitive and Developmental. Organizational stressors included demands related to finance, time, training and coaching, and governing body systems; competitive stressors related to behavior, performance and morality-related issues associated with their child's matches; and developmental stressors centered on educational issues, uncertainty of tennis transitions, and future decision making. While sampling stage parents encountered few developmental stressors compared to later stage parents, a range of competitive stressors were highly prominent. Organizational stressors were particularly foremost for specializing and investment stage parents. Implications are discussed with reference to further research into the parental stress process and to the importance of stage-specific parent education initiatives.     

Empathy and Social Perspective Taking in Children with Attention-Deficit/Hyperactivity Disorder

This study explored empathy and social perspective taking in 8 to 12 year old children with and without Attention-Deficit/Hyperactivity Disorder (ADHD). The sample comprised 92 children, 50 with a diagnosis of ADHD and 42 typically developing comparison children. Although children with ADHD were rated by their parents as less empathic than children without ADHD, this difference was accounted for by co-occurring oppositional and conduct problems among children in the ADHD sample. Children with ADHD used lower levels of social perspective taking coordination in their definition of problems, identification of feelings, and evaluation of outcomes than children without ADHD, and these differences persisted after the role of language abilities, intelligence and oppositional and conduct problems were taken into account. Girls were more empathic and had higher overall social perspective taking scores than boys. Implications for research and practice are discussed. This research was funded by the Social Sciences and Humanities Research Council (SSHRC).     

ALTERING THE NEAR‐MISS EFFECT IN SLOT MACHINE GAMBLERS

This study investigated the potential for recreational gamblers to respond as if certain types of losing slot machine outcomes were actually closer to a win than others (termed the near‐miss effect). Exposure to conditional discrimination training and testing disrupted this effect for 10 of the 16 participants. These 10 participants demonstrated high percentages of conditional discrimination testing performance, and the remaining 6 participants failed the discrimination tests. The implications for a verbally based behavioral explanation of gambling are presented.