Factors leading to orphans and vulnerable children living in community-based homes

This study explored the influences on living arrangements of orphans and vulnerable children (OVC) housed at a community-based home in Johannesburg, South Africa. A total of 50 OVC (males = 36%, females = 64%; age range 11 to 18 years) completed an open-ended questionnaire, while some of them also participated in individual interviews and focus group discussions on how they became residents of the community-based home. The data were thematically analysed. Findings suggest their choice to live in a community-based care setting to have been influenced by homelessness with accompanying poverty, health issues, experiences of child abuse and neglect, discrimination, and domestic violence. School psychologists working with OVC from community-based homes should consider pathways by which the children could be provided with needed support for resilient health and wellness.     

On the Origins of Children's Compliance and Opposition: Family Context, Reinforcement, and Rules

Interactional synchrony and context dependent reinforcement are presented as similar phenomena in this discussion of children's dispositions to comply with or to oppose parental instructions. I argue that consistent and appropriate parental reactions to the full range of a child's response repertoire will establish a family context conducive to positive reinforcement of child compliance. In contrast, inconsistent parental reactions appear to create a chaotic family context conducive to the negative reinforcement of child opposition. Depending on these two forms of context, the parents and children seem to generate distinctive personal rules which outline the functional arrangements of context, behavior and reinforcement. The importance of these personal rules in helping parents and children to improve the lawfulness of family context is highlighted.     

自我效能、价值、课堂环境及学习成绩与学业求助的关系

以１３５名初中二年级学生为被试,采用问卷研究了自我效能、价值、课堂环境及学习成绩与学业求助的关系。结果表明：（１）自我效能与求助益处、工具性求助呈显著正相关关系;与求助代价、执行性求助和回避求助呈显著负相关关系;（２）价值与求助益处、工具性求助呈显著正相关关系;与求助价价、执行性和回避求助呈显著负相关关系;（３）支持求助的课堂环境与工具性求助呈显著正相关关系;与来自老师的威胁和回避求助呈显著负相关     

Contribution of Ventrolateral Prefrontal Cortex to the Acquisition and Extinction of Conditioned Fear in Rats

The ventrolateral, agranular insular portion of prefrontal cortex (PFC) in rats is involved in visceral functions and has been shown to be involved in emotional processes. However, its contribution to aversive learning has not been well defined. Classical fear conditioning has been a powerful tool for illuminating some of the primary neural structures involved in aversive emotional learning. We measured both the acquisition and the extinction of conditioned fear following lesions of the ventrolateral PFC of rats. Lesions reduced fear reactivity to contextual stimuli associated with conditioning without affecting CS acquisition, and had no effect on response extinction. Ventrolateral PFC may normally be involved in the processing of contextual information while not being directly involved in extinction processes within the aversive domain.     

Child conduct problems: Disorders in conduct or social continuity?

This paper outlines data and speculations relevant to a social continuity hypothesis regarding the development of children's conduct problems. According to the hypothesis, conduct problems arise from an absence of continuity in the child's relationship with parents. This absence constitutes an unpredictable and aversive context for the child, and because the youngster's disruptive conduct can generate short term continuity, that behavior is likely to be reinforced. A review of research concerning this hypothesis is presented and the conclusions focus on evidence of continuity in cooperative parent-child exchanges and discontinuity in non-compliant exchanges. The grounding of this hypothesis within social learning and theory is outlined and its heuristic value for future research and clinical interventions is presented.     

A case study of expert judgment: Economists' probabilities versus base-rate model forecasts

In this case study of economists' forecasts concerning economic downturn, we examine key issues concerning the psychology of prediction and the controversy surrounding the value of expertise in forecasting. We examine when experts' knowledge promotes forecast accuracy and whether biases found in psychological studies (including underutilization of relevant base rates and tendencies to extreme prediction) occur in these economic forecasts. Experts' forecasts were compared to forecasts derived from base-rate models that relied on the historical frequencies of economic downturns. The performance patterns of the experts and models crossed over the forecast horizon. Experts outperformed models in shorter-term forecasting, whereas models outperformed experts in longer-term forecasting. These results highlight the abilities and limits of experts and models in prediction and the sources of their inaccuracy.     

Enacted and nonenacted encoding of social actions

Previous research has demonstrated that recall of enacted verbal commands is superior to recall of the same commands without enactment. The experiment reported explored whether the same effect would hold true in a social context as opposed to the non-social context used in previous research. The results demonstrated that this is indeed the case. Enacted verbal commands are better recalled than commands that are encoded verbally and better than commands that are encoded by means of observing them being performed. It was also demonstrated that items rated as having positive emotional value were better recalled than items rated as negative or neutral. This was true for enacted as well as for nonenacted commands. It is concluded that there is no basic difference between memory of commands enacted in the social context and memory of commands enacted in a non-social context. We discuss the data in relation to current theory of memory of actions.