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41.
The aim of this research is to examine the effects of an intervention, focusing on the development of political empowerment, with university students. Undergraduates were randomly assigned to one of two conditions (intervention/control) and were surveyed at two time points: before implementation of the intervention and upon completion of the intervention (or the equivalent two semester period). ANCOVA analyses reveal that individuals who participated in the empowering intervention had increased feelings of political commitment and a decreased sense of political efficacy compared to individuals who were randomly assigned to a waiting list/control group. Finally, limitations of this study are discussed and suggestions for future research are presented. 相似文献
42.
Lister hooded rats were trained on a forced-sample T-maze alternation task in an environment lacking spatial landmarks. An
early study of spontaneous alternation on the T-maze had shown that rats use a "spatial sense" to select alternate maze arms
across mazes. As this phenomenon may provide a useful tool for studying the neural substrates of a directional sense, we wished
to confirm this finding on a different version of the T-maze task, with well-trained animals. We found that rats successfully
selected the appropriate maze arm when the choice phase of the task was presented on a second maze, oriented in the same direction,
and located in an adjacent room. However, choice performance fell to chance level when the second maze was oriented 90° relative
to the first. This result suggests that the rats do not simply alternate turns across the two environments, but rather that
they rely on a sense of direction that is carried across environments.
Electronic Publication 相似文献
43.
The dual-process model of recognition memory proposed by Jacoby (1991; see also Mandler, 1980) postulates the existence of two independent components of recognition memory: a conscious retrieval process (recollection) and an automatic component ( familiarity). Older adults appear to be impaired in recollection, but findings with respect to familiarity have been mixed. Studies of the brain bases of these components, using neurological patients, have also been inconclusive. We examined recollection and familiarity, using the process dissociation procedure, in older adults characterized on the basis of both their frontal and their medial temporal lobe function. Findings suggest that only some older adults, depending on their neuropsychological status, are impaired in recollection and/or familiarity: Recollection seems to involve both frontal and medial temporal lobe function, whereas familiarity appears to be dependent only on function associated with the medial temporal lobes. 相似文献
44.
Emotion, plasticity, context, and regulation: perspectives from affective neuroscience 总被引:19,自引:0,他引:19
The authors present an overview of the neural bases of emotion. They underscore the role of the prefrontal cortex (PFC) and amygdala in 2 broad approach- and withdrawal-related emotion systems. Components and measures of affective style are identified. Emphasis is given to affective chronometry and a role for the PFC in this process is proposed. Plasticity in the central circuitry of emotion is considered, and implications of data showing experience-induced changes in the hippocampus for understanding psychopathology and stress-related symptoms are discussed. Two key forms of affective plasticity are described--context and regulation. A role for the hippocampus in context-dependent normal and dysfunctional emotional responding is proposed. Finally, implications of these data for understanding the impact on neural circuitry of interventions to promote positive affect and on mechanisms that govern health and disease are considered. 相似文献
45.
46.
Davidson RJ 《The American psychologist》2000,55(11):1196-1214
The brain circuitry underlying emotion includes several territories of the prefrontal cortex (PFC), the amygdala, hippocampus, anterior cingulate, and related structures. In general, the PFC represents emotion in the absence of immediately present incentives and thus plays a crucial role in the anticipation of the future affective consequences of action, as well as in the persistence of emotion following the offset of an elicitor. The functions of the other structures in this circuit are also considered. Individual differences in this circuitry are reviewed, with an emphasis on asymmetries within the PFC and activation of the amygdala as 2 key components of affective style. These individual differences are related to both behavioral and biological variables associated with affective style and emotion regulation. Plasticity in this circuitry and its implications for transforming emotion and cultivating positive affect and resilience are considered. 相似文献
47.
Pastoral Psychology - 相似文献
48.
49.
The current article is an analysis of the research represented in American Journal of Community Psychology (AJCP) from 1993 to 1998, including a comparison to two previously published analytic reviews by Lounsbury et al. (J. W. Lounsbury, D. S. Leader, E. P. Meares, & M. P. Cook, 1980) and Speer et al. (P. Speer, A. Dey, P. Griggs, C. Gibson, B. Lubin, & J. Hughey, 1992), respectively. Observed trends are examined with references to major epistemological frameworks and methods used to define community psychology. Four guiding principles were examined to determine the representation of the epistemological frameworks of the articles published in the journal. The frameworks include social action, human diversity and cultural relativity, person–environmental fit, and methodological procedures. The results document the transition of community psychology from its early beginnings to an independent field conducting research consistent with the values articulated at the Swampscott Conference. This paper also comments on how well, after three decades of publication, the journal has served as a vehicle for improving community life. 相似文献
50.