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Two experiments with rat subjects used a variety of transfer tests to examine the associations learned when Pavlovian inhibition is established by an A+, AX− paradigm. Experiment 1 found in a conditioned suppression situation that inhibition conditioned to X with one exciter (A) readily transferred to another exciter (B) which had been paired with the same shock US. Transfer occurred even when the response to A had been extinguished prior to testing with B. However, X did not inhibit a general activity response produced by a B which had been subsequently paired with a food US. Experiment 2 employed a Pavlovian conditioning situation in which A and B, when separately paired with the same food US, evoked dissimilar responses. Nevertheless, an inhibitor trained in an A+, AX− paradigm successfully inhibited the different response evoked by B. However, such an X did not inhibit the behaviors acquired by A or B when they were subsequently paired with a shock US. The transfer of Pavlovian inhibition across conditioned stimuli and responses but not across unconditioned stimuli is consistent with the notion that a conditioned inhibitor acts to prevent activation of a US representation which would normally be activated by conditioned exciters. 相似文献
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John J. Sidtis 《Brain and language》1982,17(2):287-300
The patterns of perceptual asymmetry elicited by dichotic speech and complex pitch stimuli were evaluated in a group of 28 normal, right-handed subjects. As in previous studies, between 70 and 75% of the subjects showed a right-ear advantage for speech and left-ear advantage for pitch. However, less than half of the subjects (46%) showed the expected pattern on both tests. It is argued that the assumption of symmetrical, contralateral auditory pathway superiority during dichotic stimulation is only appropriate in roughly half of the dextral population. In the remaining half, significant subcortical asymmetries and/or a lack of contralateral advantage appear to be present. The assessment of complementary cortical functions should provide a way to reduce the confounding of cortical and subcortical contributions to auditory perceptual asymmetries, and thus provide a more accurate behavioral index of brain organization. 相似文献
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Lester Alston 《Journal of applied developmental psychology》1982,3(2):155-165
Studies of disciplinary responses to preschool children's transgressions often assume that subjects share the same degree of concern for the misbehavior under study. Individual differences in the strengths of different transgressions in eliciting disciplinary interventions were studied in 31 black mothers and 31 black teachers of Head Start children. Simulated situational urgency to discipline was measured by a Q-sort of 60 items depicting 10 types of misconduct observed in preschool classrooms. Attitudes of concern for the significances of the behaviors for the children's development were obtained through a separate rank-ordering procedure. Parents saw significantly more urgency in transgressions of social deportment. Teachers viewed aggressive and antisocial behaviors as more urgent, and tended to show closer agreement between intervention urgency and attitudes. Whereas teachers' interventions may be interpreted as responses to group child-care demands, the parents' concern for social deportment invites several interpretations. 相似文献
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Susan D Phillips 《Journal of Vocational Behavior》1982,20(2):129-140
The study described was designed to examine career exploration in the adult years, as seen from the perspective of decision-making behavior. Using conceptual models provided by H. B. Gelatt (Journal of Counseling Psychology, 1962, 9, 240–245) and D. V. Tiedeman (Personnel and Guidance Journal, 1961, 40, 15–21), two research questions were posed: (1) To what extent does exploration occur prior to more terminal career behaviors? and (2) To what extent are exploratory and terminal career decision modes interdependent? These questions were addressed by examining the series of decisions made by 95 subjects over a period of 18 years. The results supported the expectation that decisions made at earlier stages of development are more likely to be of an exploratory nature and that decisions made at later stages are more likely to be of a terminal nature. In addition, support was found for the hypothesis that decision-making strategies at various stages of development are interdependent. 相似文献