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121.
Mental activation of supportive ties, hostility, and cardiovascular reactivity to laboratory stress in young men and women. 总被引:5,自引:0,他引:5
In addition to actual social interactions, internal representations of supportive ties could affect mechanisms linking relationships and health. Undergraduates (41 men, 41 women) wrote about supportive ties or casual acquaintances. Supportive ties were rated as warmer and less controlling than acquaintances, and writing about them evoked reductions in negative affect, especially for low-hostile participants. Compared with the acquaintance condition, the supportive tie condition resulted in reduced heart rate and blood pressure response during a subsequent speech stressor. Among women, the supportive tie condition reduced blood pressure response among low- but not among high-hostile participants. Hence, mental activation of supportive ties altered effects of laboratory stress and might be relevant to the effects of social relations on health. 相似文献
122.
In this contribution, results are presented of research on the predictive validity of a procedure for the career-oriented selection of graduates in The Netherlands. After selection on account of applicant letter, the selection procedure consists of four selective steps: interview with a ‘recruitment officer’, mental test, interview with line manager, and an assessment center comprising two situational exercises. Performance indicators investigated are present salary, average annual changes in function, appraisal of performance, appraisal of management potential, and average annual salary progression. We report on the relationships between the predictors, between the criteria, and between predictors and criteria. The assessment center, together with other steps from the selection procedure, appear to be valid for a number of performance indicators. The correlation between the overall assessment center rating and present salary, corrected for restriction in range, equals 0.55. Stepwise regression indicates that elements from all procedure steps contribute to the prediction of the criterion of average annual salary progression. The disturbing influence of possible ‘crown prince’ -effects on these results, are discussed. Also, the decision process taking place during the end meeting of the assessors is investigated. Finally, the evaluation of the procedure, both by accepted and by rejected candidates, is discussed. These and other results are compared to what is generally known about assessment centers. 相似文献
123.
In a study by the first author wherein 102 community-residing older adults were administered the Holtzman Inkblot Technique (HIT), data collected were analyzed regarding the equivalence of the HIT and the HIT 25. Although alpha coefficients and split-half correlations were low when single-response-per-card data were analyzed, corrected Spearman-Brown coefficients were more supportive of the use of the HIT 25 with older adults. These data suggest that although a shortened form of the HIT may be useful with aged persons, research exploring the substantive bases for creating a shortened version of the HIT is nevertheless necessary. 相似文献
124.
Dr. Bert F. Green Jr. 《Psychometrika》1976,41(2):263-266
A summary and interpretation of the recent literature on the indeterminacy of factor scores is given in simple terms. A good index of factor score determinacy is the squared multiple correlation of the factor with the observed variables. 相似文献
125.
Bert F. Green 《Psychometrika》1986,51(1):65-68
Mathematical models have been represented inPsychometrika first in biophysics, then in stochastic models of behavior, and later in computer simulations of behavior. Other specialized journals now attract many articles in these areas, butPsychometrika's policy of broad interest in all aspects of quantitative psychology remains sound. This paper reviewsPsychometrika's coverage of mathematical models and computation, and discusses some matters of editorial policy. 相似文献
126.
127.
Why your "head is in the clouds" during thinking: the relationship between cognition and upper space
Higher-order cognition in humans has not generally been viewed as closely entwined with the brain mechanisms mediating more basic perceptual-motor interactions in 3-D space. However, recent findings suggest that perceptual and oculomotor mechanisms that are biased toward the upper field (which disproportionately represents radially distant space) are activated during complex mental operations, ranging from semantic processing to mental arithmetic and memory search. The particularly close affinity with upward conjugate eye deviations--further confirmed in a study of 24 schoolchildren who responded to various mental questions and demands--suggests that active, abstract thinking in humans may have expropriated the focal-extrapersonal brain systems involved in saccadic exploration of the distant environment in other primates. 相似文献
128.
Recently, [Kunde, W., Kiesel, A., & Hoffmann, J. (2003). Conscious control over the content of unconscious cognition. Cognition, 88, 223-242] used a masked priming paradigm to argue that neither the 'elaborate processing' or the 'evolving automaticity' view can account for the processing of unconscious numerical stimuli. In our Experiment 1 we replicated [Kunde, W., Kiesel, A., & Hoffmann, J. (2003). Conscious control over the content of unconscious cognition. Cognition, 88, 223-242] Experiment 4 and show that with a less demanding mask than that used by Kunde et al., 'elaborate processing' can explain priming results given that there are side conditions to trigger elaborate processing of unconscious stimuli. The second experiment further explores this influence of the masks by increasing the relevance of the symbols by which the mask is composed. The results show that an increase in relevance of the mask is accompanied by a decrease in the priming effect, though there was no significant change in conscious awareness of the prime. 相似文献
129.
The nature of the representations maintained in verbal working memory is a topic of debate. Some authors argue for a modality-dependent code, tied to particular sensory or motor systems. Others argue for a modality-neutral code. Sign language affords a unique perspective because it factors out the effects of modality. In an fMRI experiment, deaf participants viewed and covertly rehearsed strings of non-sense signs; analyses focused on regions responsive in both sensory and rehearsal phases. Compared with previous findings in hearing subjects, deaf subjects showed a significantly increased involvement of parietal regions. A lesion case study indicates that this network is left-dominant. The findings support the hypothesis that linguistic working memory is supported by modality-specific neural systems, but some modality-neutral systems may also be involved. 相似文献
130.
Bert B Dere E Wilhelmi N Kusserow H Theuring F Huston JP Fink H 《Neurobiology of learning and memory》2005,84(1):57-68
Previously, we showed that mice that overexpress the 5-HT(1A) receptor transiently from embryonic to perinatal stages show reduced anxiety and changes in brain serotonin turnover as adults. Here, we investigated the long-term effects of the temporary overexpression of the 5-HT(1A) receptor during early embryonic and perinatal development on the performance in two memory tasks. In the hole-board test mice that were homozygous for the transgene showed similar behavioral habituation but increased locomotion compared to heterozygous mice. In contrast water-maze performance of homozygous mice was impaired compared to heterozygous mice. These results suggest that a transient overexpression of 5-HT(1A) receptor during embryonic and perinatal development has detrimental effects on water-maze performance at adult stages. 相似文献