Mother-toddler play interaction: A contrast of substance-exposed and nonexposed children

Recent studies have raised concerns about whether the play of cocaine-exposed or polysubstance-exposed children is deficient or disturbed, presumably as a result of the prenatal exposure. In this study, the quality of toddler play did not differ between 13 low income polysubstance-exposed and 13 low income nonexposed toddlers when rated in a 16-minute play session in their own homes with their mothers. Specifically, there were no differences in either cognitive or affective dimensions of play, as rated by observers who were blind to exposure status. In addition, the quality of maternal support for the play, as rated using the Parent/Caregiver Interaction Scale, did not differ between the two groups. Positive aspects of the mothers' behavior in supporting her child's play were predictive of higher quality child play. Power analyses suggest that the sample size was sufficient to have detected group differences if they had in fact existed. © 1997 Michigan Association for Infant Mental Health     

Aggression and psychopathology in adolescents with a preference for violent electronic games

Associations between a preference for violent electronic games and adolescents’ self‐perceptions of problem behaviors and emotions were examined. It was predicted that a preference for violent games would be associated with negative externalizing characteristics, in particular aggressive emotions and behaviors, on the Youth Self‐Report (YSR), a standardized self‐report measure of adolescent problem behaviors. Thirty‐two 11‐ through 15‐year‐olds (17 girls) listed and categorized favorite electronic games into one of six predetermined categories and completed the YSR. MANOVA revealed significant relationships between a preference for violent games and the Thought Problems subscale (P < .01) and YSR Total Score (P < .05), with trends noted for the Internalizing (P < .06) and Anxious‐Depressed (P < .08) subscales. Expected relationships with externalizing behaviors, including aggression, were not found. However, across all YSR subscales, children with higher preference for violent games had more clinically significant elevations than those with low preference for violent games. On the Total Problems subscale, of the eight children receiving scores in the clinically significant range, six were in the High preference group (three boys and three girls). The failure to find the expected relationships between a preference for violent games and aggressive, externalizing behaviors is puzzling. It is possible that individuals with a preference for violent games may have high exposure to all forms of media violence. Their perceptions of their own behavior, in comparison, may not seem sufficiently aggressive to justify endorsement of problems in this area. Or, playing violent electronic games may promote a disconnection between the emotions normally associated with violence and violent acts. These explanations are consistent with a desensitization model where exposure to media violence decreases sensitivity to aggression. Aggr. Behav. 28:134–144, 2002. © 2002 Wiley‐Liss, Inc.     

Associations between childhood adversity and daily suppression and avoidance in response to stress in adulthood: can neurobiological sensitivity help explain this relationship?

Background and objectives: Although it has been postulated that psychological responses to stress in adulthood are grounded in childhood experiences in the family environment, evidence has been inconsistent. This study tested whether two putative measures of neurobiological sensitivity (vagal flexibility and attentional capacity) moderated the relation between women’s reported exposure to a risky childhood environment and current engagement in suppressive or avoidant coping in response to daily stress.

Design and methods: Adult women (N?=?158) recruited for a study of stress, coping, and aging reported on early adversity (EA) in their childhood family environment and completed a week-long daily diary in which they described their most stressful event of the day and indicated the degree to which they used suppression or avoidance in response to that event. In addition, women completed a visual tracking task during which heart rate variability and attentional capacity were assessed.

Results: Multilevel mixed modeling analyses revealed that greater EA predicted greater suppression and avoidance only among women with higher attentional capacity. Similarly, greater EA predicted greater use of suppression, but only among women with greater vagal flexibility.

Conclusion: Childhood adversity may predispose individuals with high neurobiological sensitivity to a lifetime of maladaptive coping.     

Allocentric spatial learning by hippocampectomised rats: A further test of the “spatial mapping” and “working memory” theories of hippocampal function

This paper reports a series of three experiments that tested the “spatial-mapping” and “working-memory” theories of hippocampal function. The experimental designs incorporate separate reference- and working-memory procedures of a water-escape task, using both spatial and non-spatial learning. In Experiment 1 (Reference memory), rats with hippocampal (HC) or cortical (CC) lesions and unoperated (UNOP) rats learned to swim to a rigid visible escape platform while avoiding contact with a floating one. In the nonspatial task, the platforms each occupied any of 8 possible positions in the pool over successive trials but differed in appearance. In the spatial task, the platforms were of identical appearance but the safe one always occupied a single fixed location. The HC rats showed a highly specific spatial learning impairment but did learn to perform consistently above chance towards the end of training. In Experiment 2 (working memory), new groups of rats were trained on similar spatial and nonspatial tasks, but the platform designated correct-in terms of its visual appearance or its spatial location-was randomly changed each day. No animal learned the nonspatial task despite extensive training. Performance on the spatial version unexpectedly revealed an impairment in the CC as well as the HC group relative to the UNOP rats. However, the HCs again performed at above chance levels and demonstrated rapid (I-trial) spatial learning towards the end training. Experiment 3 used a place navigation matching-to-sample task examine spatial working memory further. Each day, an underwater platform was hidden at any of 4 possible locations, and the rats were given 2 trials to search for it. Both UNOP and CC rats located the platform faster on Trial 2 than on Trial 1, even when the inter-trial interval was long as 30min. HC rats were no faster on Trial 2 than on Trial 1. We conclude that hippocampal lesions (1) severely but partially impair spatial but not visual reference memory and (2) give rise to different patterns impairment in different working-mermory tasks. The results are a chal lenge to both the spatial-mapping and working-memory theories.     

Densidad,delincuencia y diseño: Control formal e informal y ambiente edificado

Resumen

Este trabajo revisa la literatura acerca del impacto general del ambiente físico sobre la desorganización social, el crimen y la delincuencia juvenil, centrándose más específicamente en la relación de la densidad por vivienda, la densidad en el diseño del edificio y la delincuencia juvenil. Se muestra que en el contexto ambiental se han desarrollado dos perspectivas de control. Una destaca la capacidad de impedir el control social informal del medio edificado, y la otra, la atracción que ejerce este mismo ambiente sobre los agentes de control social formal (la policía). Se presenta un modelo de senderos que muestra que la densidad en el diseño de los edificios predice de modo independiente el consumo de marihuana y apoya la noción de que el ambiente físico puede afectar al control informal. El modelo muestra también que la densidad en el diseño del edificio predice de modo significativo la presencia de la policía, ofreciendo así un apoyo empírico a la noción de que el ambiente físico puede afectar al control formal.     

The School Bully: Assessing the Problem, Developing Interventions, and Future Research Directions

A growing concern exists among educators regarding the prevalence and impact of bullying behavior in the public schools. This behavior has serious repercussions for school climate and school safety in general. In addition, strong indicators suggest bullying behavior appears to be a precursor for community violence. Studies indicate that educators are not fully aware of the prevalence or the seriousness of bullying behavior in schools. A need exists to assess systematically the extent to which bullying behavior may be present in a given school. The critical features of several bullying assessment instruments were examined. In response to the growing concern regarding bullying, a large number of programs designed to address bullying are emerging. However, it is recommended that before selecting a program three criteria should be considered: the program (a) is supported by research; (b) is based on sound behavioral principles; and (c) emphasizes teaching prosocial behavior to replace bullying behavior.     

Individual differences in the selective processing of threatening information, and emotional responses to a stressful life event.

Previous research has established that high levels of trait anxiety commonly are associated with an automatic pattern of encoding selectivity, operating to favour the processing of emotionally threatening information. It has been suggested that this processing bias may play a functional role in mediating emotional vulnerability by moderating affective responses to stressful real life events. The current experiment employs a longitudinal design, capable of addressing the central predictions arising from this theoretical position. Thirty-one women awaiting colposcopy investigation were screened on both traditional questionnaire measures of emotional vulnerability, and on a modified emotional Stroop task that provided objective indices of their automatic and strategic patterns of processing selectivity. Subsequently, those 15 women who later received a diagnosis of cervical pathology reported the degree to which this diagnosis had impaired their level of emotional functioning. The results confirm that, at the initial test time, trait anxiety was indeed associated with an apparently automatic tendency to selectively process threat related distractor information. Furthermore, an index of this initial pattern of automatic processing selectivity was consistently the best predictor of the intensity of emotional distress elicited by the subsequent diagnosis of cervical pathology. None of our conventional questionnaire measures were capable of significantly predicting this later emotional response. We suggest that these findings offer empirical support for the hypotheses that patterns of automatic processing selectivity may moderate individuals' emotional responses to stressful life events.