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Scientists have tried to capture the rich cognitive life of dolphins through field and laboratory studies of their brain anatomy, social lives, communication and perceptual abilities. Encopheliration quotient data sugest a level of intelligence or cognitive processing in the large-brained dolphin that is closer to the human range than are our nearest primate relatives. Field studies indicate a fission-fusion type of social structure, showing social complexity rivaling that found in chimpanzee societies. Notably, cetaceans are the only mammals other than humans that clearly demonstrate vocal learning and parallels in stages of vocal learning have been reported for humans, birds and dolphins. The dolphin's vocal plasticity from infancy through adulthood, in what is probably an 'open' communication system, is likely to be related to their fission-fusion social structure and, specifically, to the fluidity of their short-term associations. However, conflicting evidence exists on the composition and organization of the dolphins whistle repertoire. In general, the level of dolphin performance on complex auditory learning and memory tasks has been compared with that of primates on similar visual tasks; however, dolphins have also demonstrated sophistrcated visual processing abilities. Laboratory studies have also provided suggestive, evidence of minor self-recognition in the dolphin, an ability previously thought to be exclusive to humans humans and apes. 相似文献
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975.
The Perception of Teasing Scale (POTS): a revision and extension of the Physical Appearance Related Teasing Scale (PARTS) 总被引:11,自引:0,他引:11
This article describes the development and validation of a revised measure for the assessment of history of being teased about physical appearance. Study 1 involved the preliminary psychometric evaluation of the questionnaire on a sample of 227 college women, Two factors emerged: Weight-Related Teasing (WT) and Teasing About Abilities/Competencies (Competency Teasing; CT). The integrity of the factor structure of these two scales was established in Study 2 with a sample of 87 college women. Internal consistency ratios in this sample were also found to be acceptable. In Study 3, 92 college women were administered measures of body image, eating disturbance, and self-esteem to test for convergence with the Perception of Teasing Scale. Subjects also rated teasing items for frequency and effect (e.g., how upset they were by the teasing). Two-week test-retest reliabilities for these measures were acceptable. Weight-Related Teasing correlated to a greater degree with other measures than Competency Teasing. Regression analyses revealed the importance of a frequency versus effect dimension. Findings are discussed in light of recent research on developmental factors in body image and eating disturbance. 相似文献
976.
Ritzler B 《Journal of personality assessment》1995,64(2):229-34; discussion 239-42
A response is made to the essay by Aronow, Reznikoff, and Moreland (this issue) on the superiority of the content analysis approach to the Rorschach. Their argument is seen as giving insufficient emphasis to the importance of information obtained from empirically based, quantified methods of Rorschach interpretation. Content analysis without score-based interpretation is not sufficiently reliable for clinical use. Also, the argument of Aronow and colleagues that the Rorschach is predominantly a projective technique is refuted. Rorschach interpretation that deemphasizes empirically based scores is as insufficient as interpretation that excludes content analysis. 相似文献
977.
蒙古族有没有自己独特的哲学思维和思想,有没有别具风格的哲学概念范畴和气派,有没有由这些思想和范畴构筑的体系,这是研究蒙古族哲学思想史时不能不思考的重要课题,也是探索蒙哲史发展规律和特点时必须回答的根本问题。 相似文献
978.
Rösblad B 《Journal of motor behavior》1997,29(2):174-182
What visual information do children normally require for the control of reaching movements? How is performance affected when children do not have access to the preferred mode of perceptual information? These questions were studied in 28 children who were tested on 3 occasions: at 6, 7, and 8 years of age. The task was to pick beads, 1 at a time, from 1 cup and carry them to another cup. With the aid of a mirror arrangement and a curtain, the amount of visual information was manipulated with regard to both the target and the performing hand. The movements were monitored with an optoelectronic device (SELSPOT II) and analyzed in terms of transport and object-handling phases. Results showed that object handling required visual information on both hand and target. For the transport phase of the movement, visual information on the spatial location of the target was sufficient, and sight of the hand did not improve performance. In contrast to adult subjects, when children did not have access to the required visual information, their performances deteriorated markedly. These results indicate that from the age of 6, children use visual information for control of arm movements in a manner like that of adults, although with less accuracy and speed. However, even 8-year-old children are limited in their ability to use alternative perceptual strategies for movement control, and they therefore become less flexible and more dependent on visual information. 相似文献
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