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To investigate gender as a possible moderator of the validity of self-reported weight data in studies of body image and eating disorders, the discrepancies between reported weights and actual weights were examined in a sample of 186 college students, 90 males and 96 females. Ninety-four percent of the students were Anglo-American, and 6% were African-American, Asian-American, or Hispanic. In comparison to male students, female students underreported their weight to a significantly greater degree. Generally, use of self-reported weight, rather than actual weight, would result in more subjects classified as normal weight or underweight and fewer classified as overweight, using standard methods of classifying individuals into weight categories. And consistent with previous research, normal-weight females perceived themselves as overweight while normal-weight males were more likely to perceive themselves as underweight. Implications for further research on gender differences in eating problems and body image are discussed.To whom reprint requests should be addressed at Department of Psychology, 210 McAlester Hall, University of Missouri, Columbia, MO 65211.  相似文献   
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Electrodermal activity and symptomatology were interrelated in a group of 56 male and 13 female recent-onset schizophrenic patients. Electrodermal activity was indexed by the frequency of nonspecific skin conductances responses and the number of trials to habituation of the skin conductance orienting response. Symptomatology was assessed by the Brief Psychiatric Rating Scale (BPRS) on two separate test occasions. The first test occasion was during the inpatient period when psychotic symptoms were prevalent and medications were variable. The second test occasion was several months later during an outpatient period when symptoms were stabilized and medications held constant. Electrodermal activity was positively and significantly related to a number of symptoms in male patients, most reliably the BPRS factors Activation and Hostility/Suspiciousness. These relationships were most consistent during the outpatient period. Of particular theoretical interest, greater electrodermal activity during the inpatient period was associated with greater outpatient psychopathology. The results suggest that heightened inpatient electrodermal activity is predictive of poor short-term symptomatic recovery in recent-onset, acute, male schizophrenic patients.  相似文献   
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There are presently two leading foreign policy decision-making paradigms in vogue. The first is based on the classical or rational model originally posited by von Neumann and Morgenstern to explain microeconomic decisions. The second is based on the cybernetic perspective whose groundwork was laid by Herbert Simon in his early research on bounded rationality. In this paper we introduce a third perspective — thepoliheuristic theory of decision-making — as an alternative to the rational actor and cybernetic paradigms in international relations. This theory is drawn in large part from research on heuristics done in experimental cognitive psychology. According to the poliheuristic theory, policy makers use poly (many) heuristics while focusing on a very narrow range of options and dimensions when making decisions. Among them, the political dimension is noncompensatory. The paper also delineates the mathematical formulations of the three decision-making models.The authors thank Raymond Dacey for his helpful comments.  相似文献   
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Stimulus control in fixed ratio matching-to-sample   总被引:3,自引:3,他引:0       下载免费PDF全文
Pigeons were maintained on a fixed ratio (FR 9) schedule of reinforcement for correct matching-to-sample responses. Included in the test situation was a vertical array of lights, illuminated in relation to the successive steps of the fixed ratio. All five subjects showed regular decrements in matching errors across the sequence of unreinforced responses within the ratio cycle. In the form of a randomly introduced probe, the stimulus situation (array of lights) appropriate to having seven of the FR 9 steps already completed was occasionally introduced at the beginning of an FR cycle. Reinforcement followed the illumination of the two remaining lights by two correct matches. The number of errors in this probe condition was sharply lower than the errors characteristic of the first two steps of the basic FR 9.  相似文献   
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Objective

The aim of this study was to address current gaps in knowledge regarding the appropriateness and quality of counselling provided to egg donors in the UK.

Methods

The present study used a cross-sectional, qualitative design. Semi-structured interviews were carried out with 29 UK egg donors to explore their experiences of egg donation and the counselling received.

Results

Of the 29 participants, 24 had received counselling. The remaining five did not receive counselling because they were either not accepted as a donor (n = 4) or were offered, but chose not to take up the session (n = 1). The findings are presented in relation to five themes: feeling supported via counselling; feeling well-informed; welcoming an individualised approach; the counselling setting; and thinking about the future.

Conclusion

Egg donors in this study had varying experiences of counselling offered to them as part of the egg donation process in the UK.

Implications

The findings indicate that there are some aspects of counselling in the UK that could be improved, including the routine offering of counselling throughout the egg donation process and the tailoring of counselling to meet egg donors' individual needs.  相似文献   
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This note focuses on the rapidly evolving role of provinces in immigrant selection through Provincial Nominee Programs (PNPs). While past years have seen their significant expansion and diversification, research and policy response seem to lag behind: literature on PNPs remains scarce. This note offers preliminary observations on the new dynamics in the immigration system arising as a result of the nominee programs. It sets out background on PNPs, situating them vis-à-vis federal skilled worker and Canadian Experience Class, outlines emerging trends, and discusses challenges associated with the increasingly complex policy landscape of the two-tiered immigrant selection system.  相似文献   
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