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Liberzon I  Phan KL 《CNS spectrums》2003,8(9):641-650
Brain-imaging studies of posttraumatic stress disorder (PTSD) have rapidly increased in recent years. Structural studies have identified potential smaller volumes of the hippocampus of traumatized and/or PTSD subjects. Functional activation studies have implicated hyperactive or altered functioning of brain regions, such as the amygdala and the insula, and a failure to engage emotional regulatory structures, such as the medial prefrontal and anterior cingulate cortex. Recent neurochemical investigations have suggested that neuromodulatory systems (eg, gamma-aminobutyric acid, micro-opioid) may underlie these aberrant brain activation patterns. This article reviews the literature on structural, functional, and neurochemical brain-imaging studies of PTSD.  相似文献   
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The qualifying influence of the sex-role appropriateness of observed behavior on children's same-sex imitation was investigated. In each of two studies employing a 2×2×2 design, girls and boys observed a live male or female model display appropriate (to the child's sex) or inappropriate behavior. Results that were consistent in both studies indicated an interaction between sex of child and appropriateness. Boys imitated less when exposed to the inappropriate than to the appropriate sequence. An interaction between sex of child and sex of observer was obtained on only one measure in Experiment I (girls responded more quickly to a female than to a male model). In this study, girls also displayed greater opposite-sex imitation than boys; in Experiment II, there were no differences between boys and girls in either same- or opposite-sex imitation. The results are discussed with regard to the same-sex hypothesis and the differential impact of sex-role factors on boys and girls.The authors wish to thank the children, parents, and staff of Forest Park Elementary School for their participation and cooperation in the conduct of this study. Special thanks are extended to Mr. Paul H. Daby, Principal. The contribution of the undergraduate models and experimenters is also acknowledged.  相似文献   
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In contrast to monistic realism (as represented by Peirce) and pluralistic irrealism (as represented by Goodman) I argue for what I call plurealism, a view which is both pluralistic and realist, recognizing different worlds that are not only independent of one another, but also independent of us.  相似文献   
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In the present review, we summarize the extant literature in the field of delinquency prevention. We do not provide a recounting of whether specific programs have or have not been effective but, rather, attempt to judge the overall utility of programs to prevent delinquency in its various forms and among various definable groups. Specifically, we organize our review of programs according to the characteristics of the targeted population, differentiating programs for universal, selected, or indicated populations. Within each population type, we further distinguish programs according to designated intervention context, relying on a biopsychosocial model that specifies four levels of influence on risk for delinquency: individual, close interpersonal relationships, proximal social settings, and societal macrosystems. At each level, we identify a number of effective intervention strategies and highlight those that are based on relevant risk factor research. As we note, the effectiveness of some approaches depends on the specific population, although, in general, multicomponent, multilevel programs appear to have the most substantial effects.  相似文献   
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The purpose of the present study was to find out whether inversion affects recognition of external and internal facial features. 24 participants matched, under two experimental conditions (pair and multiple-choice matchings), upright target faces with three categories of facial test stimuli: full faces, external features and internal features, which were presented in either upright or inverted orientations. Data analysis showed that matching of facial stimuli was faster, more accurate and more consistent under upright than under inverted orientations for all stimulus categories; mostly for full faces, and least for internal features. As a rule, there were no speed-accuracy trade-offs. Implications of the data for accounts of the inversion effect in face recognition in terms of a shift from configurational to componential processing were discussed.  相似文献   
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Engagement is essential for the processing of information. It is presented here as 2 points along a continuum: initial attention (primary self‐presentation) and sustained attention (continued self‐regulation). The LIBRE (Listen, Identify, Brainstorm, Reality Test, Encourage) Stick Figure Tool (N. S. Guerra, 2003) provides a graphic organizer for LIBRE problem solving and is instrumental in the assessment of both initial and sustained engagement tendencies. A vignette is presented to illustrate the application of the model. Implications for the model are then discussed in relation to client engagement style in an employment counseling setting.  相似文献   
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