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121.
122.
Mark R. Dixon Linda J. Hayes Lisa M. Binder Sharon Manthey Connie Sigman Darlene M. Zdanowski 《Journal of applied behavior analysis》1998,31(2):203-210
The present study evaluated a technique for teaching self-control and increasing desirable behaviors among adults with developmental disabilities. Results showed that when participants were initially given the choice between an immediate smaller reinforcer and a larger delayed reinforcer, all participants repeatedly chose the smaller reinforcer. Concurrent fixed-duration/progressive-duration reinforcement schedules then were introduced in which initially both the smaller and larger reinforcers were available immediately. Thereafter, progressively increasing delays were introduced for the schedule associated with the larger reinforcer only. When initial short-duration requirements for access to the larger reinforcer were gradually increased, participants repeatedly selected the larger reinforcer, thereby demonstrating increased self-control. 相似文献
123.
Despite the importance of increasing the number of graduate degrees awarded to members of minority groups, there has been little research on how minority students adapt to the graduate school environment. The present study examined how social integration and social support were related to academic performance and psychological well-being among 89 black graduate and professional students. Findings indicate that black graduate students were not well integrated into their academic environment. Students in relatively more integrated departments were better adjusted, had higher grades, and perceived themselves to be making good progress in their graduate work. These students were also less likely to have considered dropping out of school. Frequency of out-of-school contact with black faculty and the number of black students in the department were important social integration and social support variables. The implications of these findings for minority student retention are discussed. 相似文献
124.
Anterior-posterior interhemispheric differences in the loci of lesions producing visual hemineglect 总被引:7,自引:0,他引:7
J A Ogden 《Brain and cognition》1985,4(1):59-75
Five neuropsychological tests designed to measure the presence and severity of visual hemineglect were given to 101 patients with clearly defined unilateral lesions. Of these, visual hemineglect was present in 28 out of a total of 56 left brain damaged (LBD) patients and in 20 out of 45 right brain damaged (RBD) patients. The incidence of hemineglect in these groups did not differ significantly, but the severity of hemineglect was greater in the RBD group than in the LBD group. However, the two groups were found to differ significantly with respect to the loci of the lesions most likely to result in hemineglect. In the RBD group most patients with hemineglect had posterior lesions, and in the LBD group most patients with hemineglect had anterior lesions. Possible reasons for this were discussed first from the point of view of an inattention hypothesis and second in terms of the effects the lateralization of language representation might have on the representation of spatial functions. 相似文献
125.
Short-term memory processes of mentally retarded (mild, moderate, and severe) and nonretarded persons were compared in a delayed matching-to-sample task that minimized the use of verbal rehearsal. In addition to trials with delays up to 20 s, the inclusion of trials on which the sample and comparison stimuli occurred simultaneously made it possible to isolate memory and discriminability. Forgetting was most pronounced between the simultaneous and 0-s conditions, and nonretarded subjects forgot less than retarded subjects between these conditions. There were no group differences beyond the 0-s delay. Ease of strategy use failed to account for individual differences, and reported strategy use was not related systematically to performance. These findings are incompatible with the hypothesis that normal-retarded differences occur only on tasks involving effortful cognitive strategies. Differences between nonretarded and retarded groups in this study may be due to a failure in automatic encoding processes in retarded persons. 相似文献
126.
Michael P. Sobol Brian M. Earn Darlene Bennett Tom Humphries 《Journal of abnormal child psychology》1983,11(2):217-227
The social attributions of learning-disabled and control children with either similar or higher social acceptance ratings were assessed within an open-ended interview format. In addition, measures of social self-esteem and expectation of social success were obtained. The learning-disabled group used luck more frequently and personality interaction less frequently as explanations for social outcomes than did the other two groups. Learning-disabled children also had the lowest expectation of social success and, like the low acceptance group, had a poorer social self-image. Possible explanations for the development of these attributions and the implications for holding them were discussed. 相似文献
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Ilana J. Bennett Kelly Anne Barnes James H. Howard Darlene V. Howard 《Behavior research methods》2009,41(2):391-395
The spatial contextual cuing task (SCCT) (Chun & Jiang, 1998) is an implicit learning task that appears to depend on the medial
temporal lobes. This unusual combination has been of interest in functional imaging studies and research with clinical populations,
where testing time is at a premium. However, the original version of the SCCT is time-consuming. In this study, 29 young adults
(age range, 18–22 years) completed the SCCT, in which participants respond to the orientation of a target in arrays containing
11 distractors. Either 12 (original version) or 6 (abbreviated version) arrays repeated across the experiment, with the remaining
novel arrays being generated randomly. Results revealed that the magnitude of learning (faster responses to repeated versus
novel arrays) was larger when there were fewer repeated arrays, with no explicit awareness in most participants. Thus, the
abbreviated version remained implicit, with the additional benefit of increasing the magnitude of learning. 相似文献
130.
Body Weight,the Home Environment,and Eating Behaviour Across Three Generations of Women: A Quasi‐Longitudinal Study in Four Mediterranean and Non‐Mediterranean Countries 下载免费PDF全文