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91.
Approach–avoidance paradigms create a competition between appetitive and aversive contingencies and are widely used in nonhuman research on anxiety. Here, we examined how instructions about threat and avoidance impact control by competing contingencies over human approach–avoidance behavior. Additionally, Experiment 1 examined the effects of threat magnitude (money loss amount) and avoidance cost (fixed ratio requirements), whereas Experiment 2 examined the effects of threat information (available, unavailable and inaccurate) on approach–avoidance. During the task, approach responding was modeled by reinforcing responding with money on a FR schedule. By performing an observing response, participants produced an escalating “threat meter”. Instructions stated that the threat meter levels displayed the current probability of losing money, when in fact loss only occurred when the level reached the maximum. Instructions also stated pressing an avoidance button lowered the threat level. Overall, instructions produced cycles of approach and avoidance responding with transitions from approach to avoidance when threat was high and transitions back to approach after avoidance reduced threat. Experiment 1 revealed increasing avoidance cost, but not threat magnitude, shifted approach–avoidance transitions to higher threat levels and increased anxiety ratings, but did not influence the frequency of approach–avoidance cycles. Experiment 2 revealed when threat level information was available or absent earnings were high, but earnings decreased when inaccurate threat information was incompatible with contingencies. Our findings build on prior nonhuman and human approach–avoidance research by highlighting how instructed threat and avoidance can impact human AA behavior and self‐reported anxiety.  相似文献   
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Traumatic experiences have a ripple effect, which continues throughout life and function as a powerful inner force that draws the survivor like a magnet to situations and events that allow him or her to work through pain; to give it shape, to release it, to express it to others, to make sense of it and to find some meaning in it. Self-expression through the creative arts can be one of the most effective means to healing. By externalizing what is experienced internally as overwhelming and fragmenting, and by fashioning it into a creative product, the artist brings the traumatic experience into the light of day for a new viewing. This enables reflection and integration of what is internally chaotic to be defined, mastered, and integrated into a coherent meaningful narrative. The artistic product, which can be shared with witnessing others, facilitates connection and fosters a healthy narcissism. The transformation of trauma into creative self-expression is illustrated here by an analysis of three generations of survivors—the author, her father, and her daughter—who each turned to the arts as a means of self-healing.  相似文献   
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People have a fundamental need to belong that, when satisfied, is linked to a variety of indicators of well‐being. The current article discusses what happens when social relationships go awry, namely through social exclusion. It seeks to resolve discrepancies in the literature by proposing that responses to social exclusion depend primarily on the prospect of social acceptance. When people feel socially excluded, they want to regain acceptance and thus may respond in ways that can help them do so. When the possibility of acceptance is not forthcoming, however, socially excluded people become selfish and antisocial. Evidence for this pattern was found at behavioral, cognitive, and biological levels. The motivation to gain acceptance may drive people to engage in negative health behaviors, such as smoking. Thus, excluded people demonstrate sensitivity to possible social acceptance, but they can exude an air of selfishness and hostility when there is no possibility of satisfying their need to belong.  相似文献   
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Reports of research fraud have raised concerns about research integrity similar to concerns raised about financial accounting fraud. We propose a departure from self-regulation in that researchers adopt the financial accounting approach in establishing trust through an external validation process, in addition to the reporting entities and the regulatory agencies. The general conceptual framework for reviewing financial reports, utilizes external auditors who are certified and objective in using established standards to provide an opinion on the financial reports. These standards have become both broader in scope and increasingly specific as to what information is reported and the methodologies to be employed. We believe that the financial reporting overhaul encompassed in the US Sarbanes?COxley Act of 2002, which aims at preventing accounting fraud, can be applied to scientific research in 4 ways. First, Sarbanes?COxley requires corporations to have a complete set of internal accounting controls. Research organizations should use appropriate sampling techniques and audit research projects for conformity with the initial research protocols. Second, corporations are required to have the chief financial officer certify the accuracy of their financial statements. In a similar way, each research organization should have their vice-president of research (or equivalent) certify the research integrity of their research activities. In contrast, the primary responsibility of the existing Research Integrity Officers is to handle allegations of research misconduct, an after-the-fact activity. Third, generally accepted auditing standards specify the appropriate procedures for external review of a corporation??s financial statements. For similar reasons, the research review process would also require corresponding external auditing standards. Finally, these new requirements would be implemented in stages, with the largest 14 research organizations that receive 25% of the total National Institutes of Health funding, adopting these research oversight enhancements first.  相似文献   
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This study assessed the effects of gender, race, and social class on the general and area-specific self-esteem of high school students. One hundred and ninety-five high school students served as subjects in a 2 (gender: male, female) X 2 (race: black, white) X 3 (social class: low, middle and high) factorial design. The Rosenberg General Self-Esteem, the Piers-Harris Children's Self-Concept, and the Brookover Self-Concept of Ability and School Achievement scales were the measures of either general or specific self-esteem. Females, whites, and lower social class adolescents were consistently lower in their self-esteem scores than were males, blacks, and upper social class teenagers, respectively. White females were found to be lower in general and happiness self-esteem than all other gender by race subgroups. High SES white students were lower on the happiness and behavior self-esteem measures than black students and white middle-class students. Black males and white females were less confident in their school ability than were black females and white males.  相似文献   
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Two experiments were conducted with rats. The first study showed that in the T-maze a brightness discrimination learning problem was more difficult than a spatial learning problem, but in a Ross-maze a brightness problem was less difficult than a spatial task. T-maze brightness and Ross-maze spatial tasks were found to be of equal difficulty.

In the second experiment rats were trained either on a brightness or spatial discrimination reversal problem in the Ross-maze. It was found that overtraining facilitated reversal performance in the spatial task but not in the brightness problem. The theoretical implications of these results were discussed.  相似文献   
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