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61.
62.
Janice D. Yoder Thomas L. Schleicher Theodore W. McDonald 《Psychology of women quarterly》1998,22(2):209-222
We hypothesized that, in a masculine task, only token women leaders who were empowered through position (by being appointed leader) and expertise (trained with task-relevant information) and legitimated by a male experimenter as credible would be more effective in influencing the performance of their all-male groups than appointed-only and appointed-trained leaders. Thirty women undergraduates each led a small group of male students on a moon survival task. The hypothesis was supported. Videotapes of group interactions revealed that appointed-trained leaders interrupted group members and used tentative tag questions in failed attempts to share their task-relevant knowledge. In addition, group members reported the most dissatisfaction with appointed-trained leaders who, without legitimacy, violated diffused gender roles by presuming to be expert on a masculine task. The importance of the organizational empowerment of token women is underscored. 相似文献
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64.
Spontaneous symbol acquisition and communicative use by pygmy chimpanzees (Pan paniscus) 总被引:1,自引:0,他引:1
S Savage-Rumbaugh K McDonald R A Sevcik W D Hopkins E Rubert 《Journal of experimental psychology. General》1986,115(3):211-235
Two pygmy chimpanzees (Pan paniscus) have spontaneously begun to use symbols to communicate with people. In contrast to common chimpanzees (Pan troglodytes) using the same communicative system, the pygmy chimpanzees did not need explicit training in order to form referential symbol-object associations. Instead, they acquired symbols by observing others use these symbols in daily communications with them. In addition, the pygmy chimpanzees have begun to comprehend spoken English words and can readily identify lexigrams upon hearing the spoken words. By contrast, common chimpanzees who received similar exposure to spoken English are unable to do so. The older pygmy chimpanzee has begun to form requests of the form agent-verb-recipient in which he is neither the agent nor the recipient. By contrast, similarly aged common chimpanzees limited their requests to simple verbs, in which the agent was always presumed to be the addressee and the chimpanzee itself was always the recipient, thus they had no need to indicate a specific agent or recipient. These results suggest that these pygmy chimpanzees exhibit symbolic and auditory perceptual skills that are distinctly different from those of common chimpanzees. 相似文献
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66.
The effects of several variables on compositional response rate were investigated in three classrooms. After establishing baseline composition rates in each of the three classrooms, an experimental phase was introduced that consisted of: explicit timing of the children's composition period with a stopwatch, immediate feedback on the number of words each child produced, public posting of the greatest number of words written by each child to date, and instructions to try to exceed their highest score. In the second-grade classroom, these conditions were introduced, removed, and re-introduced. In two fifth-grade classrooms, these conditions were introduced according to a multiple baseline, across classes. In all cases, introduction of the experimental conditions led to a doubling of rate of words written by students and an increase in subjective quality ratings of compositions made by independent judges. 相似文献
67.
Roderick P. McDonald 《Psychometrika》1976,41(4):543-546
The monotone regression function of Kruskal and the rank image function of Guttman and Lingoes were fitted to bivariate normal samples and their statistical properties contrasted.This paper was written while the author was a Visiting Professor in the Department of Psychology, University College, London. 相似文献
68.
This paper demonstrates how collaboration among student development educators and university instructors can utilize the content of academic courses to facilitate personal development in adolescent college students. Through an application of Chickering's (1969) seven vectors of human development (which occur during adolescence and early adulthood), this objective was accomplished in a course entitled Drinking and Driving: Legal and Social Aspects. Essay exams were analyzed for self-reported anecdotal behavioral examples of developmental growth attributable to participation in this course. Analysis of the results indicated that the class content had a definite developmental impact on the students, in addition to intellectual growth. By helping academic educators recognize that within their course content and structure they can and do affect adolescents on many developmental dimensions, the end result can be a richer, holistic educational experience for students. 相似文献
69.
Damage to the hippocampal formation in rats selectively impairs the ability to learn cue relationships 总被引:1,自引:0,他引:1
We assessed the contribution of the hippocampal formation to performance in tasks that require rats to respond to a relationship between discriminative stimuli. The first experiment employed a nonmatching-to-sample procedure in a Y-maze. Three pairs of boxes were used which differed in brightness of the walls and in the odors that they contained. The rats were trained prior to receiving kainic acid and colchicine-induced damage to the hippocampal formation or electrolytic damage to the amygdala. After surgery all rats performed the nonmatching-to-sample task accurately if both brightness and odor cues were present in the sample and choice boxes or if the boxes contained either visual cues alone or odor cues alone. If the available cue modality was different in sample and choice boxes, then the amygdala-damaged, but not the hippocampal-damaged, rats performed accurately. In the second experiment control rats or rats with hippocampal formation damage were trained postoperatively in a conditional black/white discrimination task in a Y-maze. Only the control group successfully learned to select the white arm if the start box was illuminated and the black arm if the start box was dark. Subsequently, both groups learned a simple black/white discrimination. The same rats were tested in the hidden platform version of the Morris water task and only the control group learned to swim accurately to the goal. Both groups learned to swim accurately to a visible black platform. The results are consistent with the notion that the hippocampal formation is essential to learning that involves control exerted by a configural relationship among cues, independently of the spatial or conditional requirements of tasks. 相似文献
70.
This study examines the effect of contact with autistic children on teacher and peer attitudes to mentally-handicapped children in general. Children were interviewed and teachers completed questionnaires about their attitudes toward mentally-handicapped children in five schools attended by autistic boys and five schools not attended by any mentally-handicapped children. Children who had contact with autistic boys had more positive and realistic attitudes. Teachers' attitudes were generally positive and did not vary across settings, but those with experience in teaching mentally-handicapped children were found to have more positive attitudes than those with no experience. The implications for the integration of mentally-handicapped children are briefly discussed. 相似文献