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161.
Two studies are reported in which electroencephalograms (EEGs) of habitual cigarette smokers and of nonsmokers were taken before and after they were required to smoke a cigarette. The EEGs were scored for incidence of EEG "driving" responses to photic stimulation, an index that appears to reflect the balance between central adrenergic and cholinergic nervous systems. The findings suggest that smokers tend to have a central autonomic balance less in favor of adrenergic functioning than do nonsmokers. Cigarette smoking may alleviate a possible central adrenergic insufficiency of smokers. These findings suggest a solution to "Nesbitt's paradox," which has reference to the fact that while nicotine is a central adrenergic stimulant, smokers describe the effect of smoking in sedational terms (i.e., as relaxing or calming).  相似文献   
162.
Ss made magnitude estimations first of the areas, then of the distances, of four circles presented at five distances within an enclosed box 9 ft long. There were three viewing situations: the box had parallel walls, converging walls, or diverging walls. The variations in perspective cues influenced the apparent distance scales: with converging and parallel walls, apparent distance grew as the 1.4 power of physical distance; with diverging walls, it grew as the .95 power. Apparent area was related to distance differently in the three conditions: with converging walls, apparent area increased with distance; with parallel and diverging walls, apparent area decreased with distance. Apparent area was thus not related to changes in physical distance as the apparent distance effects would predict. In each condition, the ratio of apparent area to apparent distance (S′/D′) was a monotonie increasing function of retinal angle θ, but the rate of growth varied among the three conditions. The failure of θ D′ to define a unique value of S′ across conditions indicates that the size-distance invariance hypothesis is inadequate to predict the outcome of this experiment.  相似文献   
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Sex-stereotyped perceptions of infants were examined in children (aged 5, 9, and 15 years), college students, and the children's mothers. The children and college students as a group rated labeled female infants as littler and as more beautiful, nice, and soft than labeled male infants, with no age changes in sex-stereotyped perceptions. The mothers as a group were not influenced by the labeled sex manipulation. The 5-year-olds rated the infants the least favorably and the mothers rated the infants the most favorably. Girls rated the infants as more beautiful than the boys did. Finally, the mothers with higher masculinity scores and their sons showed less sex-stereotyped perceptions of the infants than mothers with lower masculinity scores and their sons.  相似文献   
165.
Sex Roles - This study sought to update and extend J. Z. Rubin, F. J. Provenzano, and Z. Luria's [(1974) “The Eye of the Beholder: Parents' Views on Sex of Newborns,” American...  相似文献   
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The authors examined the relation of problem-solving appraisal to health complaints and health-related expectancies among 321 undergraduates. Results indicated that self-appraised effective problem solvers reported fewer current physical symptoms during the 3 weeks prior to assessment and fewer health problems on the day of assessment than did ineffective problem solvers. Self-appraised effective problem solvers also had greater internal and lower chance expectancies for health outcomes than did ineffective problem solvers. Ineffective self-appraised problem solvers reported more negative health perceptions 3 months later during the week of final examinations. Personal control over emotional experiences when engaging in problem solving was significantly predictive of health perceptions. Results are integrated with theoretical models of problem solving and behavioral health. Implications for counseling are discussed.  相似文献   
168.
Habituation and conditioning   总被引:1,自引:0,他引:1  
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There is emerging evidence that the performance of risk assessment instruments is weaker when used for clinical decision‐making than for research purposes. For instance, research has found lower agreement between evaluators when the risk assessments are conducted during routine practice. We examined the field interrater reliability of the Short‐Term Assessment of Risk and Treatability: Adolescent Version (START:AV). Clinicians in a Dutch secure youth care facility completed START:AV assessments as part of the treatment routine. Consistent with previous literature, interrater reliability of the items and total scores was lower than previously reported in non‐field studies. Nevertheless, moderate to good interrater reliability was found for final risk judgments on most adverse outcomes. Field studies provide insights into the actual performance of structured risk assessment in real‐world settings, exposing factors that affect reliability. This information is relevant for those who wish to implement structured risk assessment with a level of reliability that is defensible considering the high stakes.  相似文献   
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