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981.
The role of suppressor effects in obscuring the relation of psychological variables and blood pressure was studied. Forty-five nonmedicated patients in a family practice rated themselves relative to their peers on a series of characteristics. Two of these, trapped and lonely, exhibited marked suppressor effects in their relationship with each other and resting blood pressure. Self-ratings of lonely exhibited a moderately strong positive association with ratings of trapped (r = .63) while only ratings of lonely showed a significant correlation with resting systolic blood pressure (r = .31). Yet when the suppressor effects of the ratings on feeling lonely were removed in the regression analyses, the ratings on feeling trapped showed a significant positive association with resting systolic pressure (r = .42). Similarly, while neither ratings on feeling lonely or on feeling trapped showed separately a significant association with resting diastolic pressure, when suppressor effects were removed in the regression analyses, the ratings of trapped were significantly associated with diastolic pressure in a positive direction (r = .34) and ratings of lonely were significantly associated in a negative direction (r = .33). The significance of this specific suppressor effect and the implications of suppression for psychosomatic research are discussed. 相似文献
982.
983.
984.
W. Jackson Davis 《Learning and motivation》1984,15(4):377-393
The neurophysiological mechanisms underlying behavioral motivation and associative learning are described in an invertebrate “model” system, the carnivorous marine mollusc Pleurobranchaea. Feeding motivation can be controlled via nutritional history and is represented centrally in the feeding motor network as a change in the balance of synaptic excitation and inhibition at the level of interneurons that initiate feeding behavior, i.e., feeding “command” interneurons. Associative learning, induced by avoidance conditioning of feeding behavior, manifests identically at the level of the command interneurons, but is distinguished from non-associative motivational changes by processes that occur in identified neurons and pathways presynaptic to the command interneurons. Motivation and learning are therefore linked mechanistically by convergent neurophysiological mechanisms at the level of central neurons that initiate behavior. 相似文献
985.
Protein synthesis and memory: a review 总被引:41,自引:0,他引:41
986.
Analyses of the rules governing conversation have frequently pointed to the existence of a rule dictating that responses to others' communications should be relevant. Unfortunately, there have been few systematic theoretical analyses of the consequences of violations of the response relevance rule. The present research was designed to extend our previous analyses of the consequences of responsiveness in dyadic interaction to examine in detail the effects of irrelevant response on processing and retention of response content, and attributions concerning the speaker. It was argued that irrelevant responses will be processed and retained more poorly, because the preceding utterance will provide a less adequate context for their interpretation. In addition, it was argued that unresponsiveness will generally be attributed to the lack of one or more of four factors previously suggested to facilitate responsiveness: attention to the other, understanding of the preceding communication, adequate response repertoire, or motivation to be responsive—along with situational (e.g., distraction) or dispositional (e.g., incompetence) reasons for their absence. These processes were examined in the context of a political debate, in which the relevance of candidates' answers to the questions was varied. As expected, response relevance was shown to facilitate processing (as indexed by ratings of clarity and organization) and retention (both recall and recognition memory) of response content. Further, the unresponsive speaker was perceived to have less clearly understood the questions asked, to possess less knowledge of the facts and understanding of the issues concerning the questions raised, and to be less motivated to discuss the issues raised (as opposed to facilitating his self-presentational goals). Moreover, those attributions were accompanied by attributions of dispositional incompetence. Finally, the unresponsive candidate was perceived as less attractive than the responsive candidate. 相似文献
987.
Autocontingencies: Suppressive and accelerative effects of pairs of shocks superimposed on a positively reinforced operant baseline 下载免费PDF全文
Previous research has shown that unsignaled shock may accelerate positively reinforced operant responding if each shock signals a subsequent shock-free period. In order to explore the boundary conditions of this effect, two experiments were performed. In Experiment 1, pairs of unsignaled shocks separated by 15, 30, 60, or 120 seconds resulted in suppressed responding during the briefest intershock interval, and in accelerated responding during the longer intervals. When the second shock in each pair signaled a shock-free period of at least 3 minutes, accelerated responding also followed offset of the second shock in all but the 30-second condition. In Experiment 2, the addition of a conditioned stimulus prior to each pair of shocks restored baseline responding, and eliminated accelerative control following the second shock only under the briefest inter-shock interval. The results are discussed in terms of the similarity between autocontingencies (shock/no-shock relations; Davis, Memmott, & Hurwitz, 1975) and recent modifications of the feature-positive procedure (e.g., Reberg & Memmott, 1979), which stress stimulus control by shock/no-shock relationships. 相似文献
988.
Paul A. Brickett Christopher M. Davis Howard F. Gabert Vito Modigliani 《Behavior research methods》1980,12(2):248-250
A laboratory configuration is described in which two compatible minicomputers are used to collect psychophyiological data and to generate a complex visual display. The two computers are part of independent systems used by different research groups for psychophysiological experimentation and cognitive reaction time research. With minimal additional requirements, however, it is possible to link the function of the two machines and greatly expand experimental possibilities. Two real-time applications are discussed, as well as other advantages of having compatible processors, such as simplified program development. 相似文献
989.
Tabulations of the sex and role (patient, helping professional, other) of all human images found in advertisements for psychoactive drugs in one half of the issues of The American Journal of Psychiatry from years 1963 to 1974 were made. Women were found to be portrayed as mentally ill significantly more often than men, while the images of men were used more frequently as doctors and others. These phenomena were discussed with references to attribution, suggestion, self-fulfilling prophecy, role playing, and the tendency to hospitalize, drug, and diagnose women as mentally ill.This article is based in part on a paper presented at the 83nd Annual Convention of the American Psychological Association, Chicago, September 1, 1975 相似文献
990.
C J Sadowski H R Woodward S F Davis D L Elsbury 《Journal of personality assessment》1983,47(6):627-631
This study investigated the hypothesis that dimensions of locus of control are differentially predictive of adjustment criteria for males and females. Two samples of undergraduates completed the Reid-Ware Three-Factor Locus of Control Scale and either the Texas Social Behavior Inventory or the Zander and Thomas version of the Barron ego strength scale. For both males and females, internals reported greater self-esteem and ego strength. However, for males, the fatalism dimension was the strongest predictor for each adjustment correlate. The social system control dimension was not predictive for males in either case. For females, the social system control dimension was predictive for each adjustment correlate, although it was not consistently the strongest predictor. The results are consistent with research on sex differences in parental antecedents of locus of control. Methodological implications of the differential predictiveness of locus of control dimensions are also addressed. 相似文献