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An automated system for measuring intracranial self-stimulation behavior is described. The system consists of two Commodore 6502 microcomputers interfaced with a constant-current generator and a standard operant chamber. The system hardware allows sine- and square-wave stimulation. Stimulus intensity can be varied in 256 steps between 0 and 100, 0 and 500, or 0 and 1,000 /µA. The system programs, which are written in machine language, allow the control of various schedules of reinforcement, the counting of operant responses and reinforcements, the measurement of interresponse intervals, and the storage of the data on disk. The software is designed for the determination of the threshold of reinforcement, on the basis of the titration of postreinforcement pauses caused by changeover in schedule control between concurrent continuous reinforcement and fixed ratio schedules. 相似文献
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The Hand Test was administered to 98 severely behavior handicapped (SBH) children and a matched control group of public school children. The withdrawal score and associated variables, indicative of severe psychopathology, differentiated the two groups. In addition, a qualitative analysis of the SBH protocols tentatively suggested a preponderance of four behavioral types that could be described as the underproductive, perseverative, psychotic and impulsive child. Implications of these findings are discussed. 相似文献
15.
J C Baird M Wagner K Fuld 《Journal of experimental psychology. Human perception and performance》1990,16(3):675-677
Modification of Restle's theory (1970) explains the moon illusion and related phenomena on the basis of three principles: (1) The apparent sizes of objects are their perceived visual angles. (2) The apparent size of the moon is determined by the ratio of the angular extent of the moon relative to the extents subtended by objects composing the surrounding context, such as the sky and things on the ground. (3) The visual extents subtended by common objects of a constant physical size decrease systematically with increasing distance from the observer. Further development of this theory requires specification of both the components of the surrounding context and their relative importance in determining the apparent size and distance of the moon. 相似文献
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Hugh L. Wagner 《Motivation and emotion》1990,14(1):27-43
This research examines the expression of positive and negative emotions under minimally social conditions. Male and female encoders were covertly videotaped while they viewed and made written ratings of their responses to a number of slides, using a list of emotion terms derived from members of the same subject pool. Results show that, even when the social nature of the situation is reduced to a minimum, the experience of some emotions is reflected on the face, and there is clear evidence for differential expression of certain positive emotions. However, the reduced social nature of the situation removes the usual female encoding advantage, supporting the suggestion that this reflects the operation of display rules. The ability to recognize the minimal expressions in this study is related to both gender and emotion type in ways that may be explained by a socialization hypothesis.I wish to thank Gill Thorpe and Eiko Mori for running the decoding subjects of this study, and Sylvie Collins, Tony Manstead, and two anonymous reviewers for comments on an earlier version of the paper. 相似文献
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F. Suzanne Talbert Peggy J. Wagner Lorraine C. Braswell Sakina Husein 《Journal of clinical psychology in medical settings》1995,2(2):133-148
The psychological stress reactions of 44 family medicine patients who were treated in the emergency room were examined approximately a year after the event. Patients were assessed on several psychological measures, including one for posttraumatic stress disorder (PTSD), and on their perception of how stressful the event was initially and now. Results show continuing stress reactions related to the emergency room event. Three patients endorsed symptoms indicating full PTSD and 13 appeared to have at least partial PTSD. Age appeared to be a factor in the presence of stress symptoms and in degree of perceived communication with the physician. 相似文献
19.
The purpose of this study was to explore the role of acculturation in coping with stress among 264 Chinese-American children. The results confirmed that the subjects used a variety of coping strategies including diversion, suppression, problem solving, minimization, and retaliation and that certain coping strategies influenced the dysphoria experienced as a result of peer stress. High acculturated children used retaliation significantly more often than their low acculturated counterparts and retaliation was found to be associated with less dysphoria for the high acculturated group. In contrast, low acculturated children who utilized suppression tended to report less dysphoria. Contrary to the hypothesis that general self worth would reduce the relationship between peer stressors and dysphoria, it had no bearing on the association for either acculturated group. The hypothesis that greater perceived social competence would lessen the association between peer stressors and dysphoria also failed to be supported by the data. In fact, for the high acculturation group higher social competence was actually associated with more reported dysphoria. In general, the results suggested that the adaptiveness of particular coping strategies may be influenced by acculturation level and that social competence plays a complicated role in the stress and coping process. Implications for counsellors are discussed. 相似文献
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Parental,child-centered attributions and outcome: A meta-analytic review with conceptual and methodological implications 总被引:3,自引:0,他引:3
Eight empirical studies which bear on the relation between parents' child-centered attributions for children's problems and parental satisfaction or child adjustment were meta-analyzed. The parental attributional dimensions of stability and globality garnered the most support as correlates of parental satisfaction and/or children's adjustment; the dimensions of intent, selfish motivation, and blame received initial support and warrant further study. Important methodological and conceptual issues were identified and improvements are suggested. The need for prospective designs aimed at determining the causal relation, if any, between parental attributions and outcome, thorough assessment of attributions and the events which impinge upon them, detailed measurement of symptom and satisfaction variables, a wider array of child diagnoses, and establishment of parental diagnoses, are emphasized. 相似文献