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A sample of 146 Bedouin-Arab pupils from polygamous and monogamous families participated in this study, which was conducted in a Bedouin-Arab village in the Negev, Israel. The authors compared learning achievement, social adjustment, and family conflict. Data revealed differences between the two groups: The children from monogamous families had higher levels of learning achievement than did the children from polygamous families; in addition, those from monogamous families adjusted to the school framework better than did those from polygamous families. The mean conflict rating of children from polygamous families was higher than that of their counterparts from monogamous families. The father's level of education tended to be inversely correlated with family size in terms of both number of children and number of wives.  相似文献   
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Connectionist computer simulation was employed to explore the notion that, if attitudes guide approach and avoidance behaviors, false negative beliefs are likely to remain uncorrected for longer than false positive beliefs. In Study 1, the authors trained a three-layer neural network to discriminate "good" and "bad" inputs distributed across a two-dimensional space. "Full feedback" training, whereby connection weights were modified to reduce error after every trial, resulted in perfect discrimination. "Contingent feedback," whereby connection weights were only updated following outputs representing approach behavior, led to several false negative errors (good inputs misclassified as bad). In Study 2, the network was redesigned to distinguish a system for learning evaluations from a mechanism for selecting actions. Biasing action selection toward approach eliminated the asymmetry between learning of good and bad inputs under contingent feedback. Implications for various attitudinal phenomena and biases in social cognition are discussed.  相似文献   
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Despite the presumed importance of interview etiquette, research examining its relationship with hiring outcomes has been relatively limited. As a step toward validating its importance, two studies were conducted to assess the influence of interview etiquette on hiring outcomes relative to other predictors. In the first study, the impact of interview etiquette was demonstrated to be similar to that of interview answer quality in influencing recruiters’ perceptions of employment suitability. Moreover, a significant interaction was found, whereby interview etiquette mattered more when interview answer quality was also high. In the second study, interview etiquette was demonstrated to explain incremental variance in job offers beyond other impression management strategies (i.e., ingratiation and self-promotion) and biographical data (i.e., work experience, academic achievement, and extracurricular involvement). Overall, these findings provide evidence that interview etiquette bears a significant relationship with hiring outcomes, signaling its value beyond other credentials and impression management tactics.  相似文献   
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Conventional cardiovascular risk factors such as cholesterol and blood pressure do not account fully for variation in coronary heart disease suggesting the involvement of additional mechanisms. We have examined the effects of a chronic psychological stress protocol on the development of atherosclerosis in the apolipoprotein E knockout mouse. We observed a 3-fold increase in staining for atheroma accompanied by a 10-fold increase in corticosterone concentrations in mice stressed for 12 weeks. These data suggest that chronic mild stress can induce or accelerate the development of atherosclerosis.  相似文献   
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Corticotrophin-releasing hormone (CRH) plays a pivotal role in the suppression of the gonadotrophin-releasing hormone (GRH) pulse generator in response to stress and intracerebroventricular (i.c.v.) administration of calcitonin gene-related peptide (CGRP). We have previously shown both CRH receptor subtypes, CRH-R1 and CRH-R2, are involved in the stress-induced suppression of LH pulses. The aims of the present study were to examine the role of CRH-R1 and CRH-R2 in CGRP-induced suppression of LH pulses, and to investigate the effects of CGRP on CRH expression in the paraventricular nucleus (PVN) and central nucleus of the amygdala (CeA), which have prominent CRH neurone populations that receive dense CGRP innervations. The suppression of LH pulses by CGRP (1.5 microg i.c.v.) was completely prevented by intravenous administration of the CRH-R1 antagonist SSR125543Q (7.5 mg/rat i.v., 30 min before CGRP), but was not affected by the CRH-R2 antagonist, astressin(2)-B (100 microg i.c.v., 10 min before CGRP). CGRP increased the CRH mRNA expression in PVN and CeA. These results provide evidence of a role for CRH-R1 in mediating the suppressive effects of CGRP on pulsatile LH secretion in the female rat, and additionally raise the possibility of an involvement of PVN and CeA CRH neuronal populations in this suppression.  相似文献   
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Recent research has looked at whether the expectancy of an emotion can account for subsequent valence specific laterality effects of prosodic emotion, though no research has examined this effect for facial emotion. In the study here (n=58), we investigated this issue using two tasks; an emotional face perception task and a novel word task that involved categorising positive and negative words. In the face perception task a valence specific laterality effect was found for surprise (positive) and anger (negative) faces in the control but not expectancy condition. Interestingly, lateralisation differed for face gender, revealing a left hemisphere advantage for male faces and a right hemisphere advantage for female faces. In the word task, an affective priming effect was found, with higher accuracy when valence of picture prime and word target were congruent. Target words were also responded to faster when presented to the LVF versus RVF in the expectancy but not control condition. These findings suggest that expecting an emotion influences laterality processing but that this differs in terms of the perceptual/experience dimension of the task. Further, that hemispheric processing of emotional expressions appear to differ in the gender of the image.  相似文献   
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