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261.
G. E. Hughes 《Studia Logica》1990,49(2):175-181
Let be the class of frames satisfying the condition
相似文献
262.
Jennifer R. Zarcone Brian A. Iwata Christine E. Hughes Timothy R. Vollmer 《Journal of applied behavior analysis》1993,26(1):135-136
An individual's self-injurious escape behavior was treated using a high-probability instructional sequence with and without extinction. When presented alone, the high-probability sequence did not reduce self-injurious behavior. When escape extinction was implemented either alone or in combination with the high-probability sequence, self-injury decreased and compliance increased, suggesting that extinction may be a necessary component of the treatment for behavior problems maintained by escape. 相似文献
263.
Diane Hughes Edward Seidman Nathaniel Williams 《American journal of community psychology》1993,21(6):687-703
Highlights the points at which culture intersects major phases of the research enterprise — problem formulation, population definition, concept and measurement development, research design, methodology, and data analysis — and influences and constrains what researchers deem worthy of investigation and how they interpret what they observe. These ethnocentric biases inhibit the development of a knowledge base for understanding diverse cultural communities. At each step of the research process, the need to carefully examine and expose the underlying cultural assumptions and to generate and develop alternative choices is emphasized. Guidelines are provided to encourage researchers to be aware of and deliberately make choices toward the development of a culturally anchored methodology that balances the demands for rigor and sensitivity. 相似文献
264.
W Epstein B Hughes S L Schneider P Bach-y-Rita 《Journal of experimental psychology. Human perception and performance》1989,15(1):28-44
Perceptual learning was examined in two experiments in which subjects, originally unfamiliar with vibrotactile stimulation, were required to identify dynamic vibrotactile patterns with static visual patterns of the same two-dimensional shapes. In Experiment 1 we examined changes in performance with practice under a variety of vibrotactile spatial and temporal conditions. In Experiment 2 we investigated transfer of learning from one set of vibrotactile patterns to another different set. In neither experiment were subjects supplied with knowledge of results. Substantial perceptual learning (improvement in identification with practice) was observed in Experiment 1, although a minority of subjects did not exhibit improvement. Experiment 2 confirmed the general findings of Experiment 1 and also provided evidence of substantial positive transfer. In both experiments, multidimensional scaling of pattern confusion data revealed that practice (and improvement in identification) did not qualitatively change the relative confusability of patterns, suggesting that the (informative) structure of the patterns, irrespective of familiarity with a specific set of patterns, determined confusability. The findings are interpreted in terms of learning constructs offered by E. J. and J. J. Gibson. We conclude by considering the prospects that a connectionist mechanism can account for the observed perceptual learning. 相似文献
265.
Jan N. Hughes Gwyneth Boodoo Joyce Alcala Mary -Claire Maggio Lisa Moore Rita Villapando 《Journal of abnormal child psychology》1989,17(6):633-646
A videotape-administered role-play test of children's social skills was developed and its psychometric properties tested. Performance criteria for the test were derived from popular children's ratings of the effectiveness of different role-play responses. The test was administered to 157 fourth- and fifth-grade boys and girls who had been classified as popular, average, neglected, or rejected, on the basis of sociometric testing. The test evidenced good interrater, test-retest, and internal consistency reliabilities. Children's role-play performance correlated significantly with teacher ratings of social competence and with peer-liking ratings. Neglected children performed more poorly on the role-play test than popular children. When differences in intelligence among social status groups were statistically controlled, social status groups did not differ on the role-play test. Results of the discriminant analyses support the conclusion that teacher ratings are better than role-play tests for identifying rejected children, whereas role-play tests and measures of intelligence appear more accurate than teacher ratings for identifying neglected children. 相似文献
266.
267.
Spatial maps of directed visual attention 总被引:1,自引:0,他引:1
H C Hughes L D Zimba 《Journal of experimental psychology. Human perception and performance》1985,11(4):409-430
Simple reaction times (RTs) to a visual target are facilitated when the target occurs at a location expected by an observer, and are slowed when the target occurs at the mirror-symmetric location contralateral to the expectancy (e.g., Posner, 1978; Posner, Snyder, & Davidson, 1980). The spatial extent of this attention effect was examined by inducing subjects to expect the target at one location and introducing occasional probe flashes at other locations throughout the visual field. The results indicated that RTs to these probes were equivalent to those obtained at the expected location so long as the probe was in the same hemifield as the subject's expectancy. Conversely, RTs to probes in the hemifield opposite the expectancy generated uniformly slower response times. These results were obtained when the expected location varied in eccentricity from 2 degrees to 16 degrees along the horizontal meridian. In addition, when the expected and unexpected locations were within the same hemifield, no expectancy effects were observed. Under these conditions, the frequently used metaphor that directed visual attention operates like a spatially restricted "beam" appears inaccurate. The implications of these findings for current views of directed attention are considered. 相似文献
268.
The Influence of Traditional Male Initiation (Lebollo) on School Discipline: Educators’ Perspectives
This study explores the influence of traditional male initiation on school discipline. Eight educators teaching in township schools in Bloemfontein, South Africa, were purposefully selected to take part in a focus-group interview. The results from a content analysis indicate that initiates may exacerbate disciplinary problems at schools and that certain types of misbehavior may be attributed to initiation schools. The study found that initiation schools might perpetuate gender inequalities, patriarchy, gangsterism, and criminality. Recommendations on how to deal with disciplinary problems arising from initiates’ behavior are made. 相似文献
269.
270.
We conducted a study to test the hypothesis that inferences about intentionality are biased toward an intentional interpretation. Contrary to previous research, participants were no more likely to judge ambiguous actions as intentional in a speeded compared to an unspeeded condition. Further, participants were faster to respond and more consistent in responding to unintentional rather than intentional actions. 相似文献
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