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排序方式: 共有516条查询结果,搜索用时 31 毫秒
61.
M Todd Allen Lori Chelius Vivek Masand Mark A Gluck Catherine E Myers Geoffrey Schnirman 《Integrative Physiological and Behavioral Science》2002,37(3):188-214
The learning of an association between a CS and a US can be retarded by unreinforced presentations of the CS alone (termed latent inhibition or LI) or by un-correlated presentations of the CS and US (termed learned irrelevance or LIRR). In rabbit eyeblink conditioning, there have been some recent failures to replicate LI. LIRR has been hypothesized as producing a stronger retardation effect than LI based on both empirical studies and computational models. In the work presented here, we examined the relative strength of LI and LIRR in eyeblink conditioning in rabbits and humans. In both species, a number of preexposure trials sufficient to produce LIRR failed to produce LI (Experiments 1 & 3). Doubling the number of CS pre-exposures did produce LI in rabbits (Experiment 2), but not in humans (Experiment 4). LI was demonstrated in humans only after manipulations including an increased inter-trial interval or ITI (Experiment 5). Overall, it appears that LIRR is a more easily producible pre-exposure retardation effect than LI for eyeblink conditioning in both rabbits and humans. Several theoretical mechanisms for LI including the conditioned attention theory, stimulus compression, novelty, and the switching theory are discussed as possible explanations for the differences between LIRR and LI. Overall, future work involving testing the neural substrates of pre-exposure effects may benefit from the use of LIRR rather than LI. 相似文献
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Bonnie Blake Drucker Nancy Angrist Myers 《Journal of experimental child psychology》1973,15(3):500-508
Six groups of 20 subjects each were run individually in a binary prediction situation with each alternative occurring equally often. Two age groups were employed; subjects were either in second or sixth grades. For one-third of the subjects at each age level, the events occurred in runs of either two or six; another third observed events which occurred in runs of either five or six; the other subjects received a random sequence of events. All subjects then received an additional 50 trials in which every prediction was correct. The results indicated some sensitivity to run length characteristics. Fewer errors of all types were made in the prediction of 5–6 sequences. The verbal reports and all-correct trial protocols revealed that at least the sixth graders employed some simple run length structure rules, although many instances of runs other than those presented in training occurred, showing much processing error. The results were discussed in terms of a general limited-capacity model of information-processing. 相似文献
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Chase C. Dougherty David W. Evans Scott M. Myers Gregory J. Moore Andrew M. Michael 《Neuropsychology review》2016,26(1):25-43
ASD and ADHD are regarded as distinct disorders in the current DSM-5. However, recent research and the RDoC initiative are recognizing considerable overlap in the clinical presentation of ASD, ADHD, and other neurodevelopmental disorders. In spite of numerous neuroimaging findings in ASD and ADHD, the extent to which either of the above views are supported remains equivocal. Here we compare structural MRI and DTI literature in ASD and ADHD. Our main findings reveal both distinct and shared neural features. Distinct expressions were in total brain volume (ASD: increased volume, ADHD: decreased volume), amygdala (ASD: overgrowth, ADHD: normal), and internal capsule (ASD: unclear, ADHD: reduced FA in DTI). Considerable overlap was noted in the corpus callosum and cerebellum (lower volume in structural MRI and decreased FA in DTI), and superior longitudinal fasciculus (reduced FA in DTI). In addition, we identify brain regions which have not been studied in depth and require more research. We discuss relationships between brain features and symptomatology. We conclude by addressing limitations of current neuroimaging research and offer approaches that account for clinical heterogeneity to better distinguish brain-behavior relationships. 相似文献
67.
Leslie Neely Mandy Rispoli Stephanie Gerow Ee Rea Hong 《Journal of Behavioral Education》2016,25(4):393-416
Telepractice has emerged as a potentially effective means of preparing parents and educators as interventionists for children with autism spectrum disorder (ASD). The purpose of this study was to evaluate the use of telepractice to train interventionists to implement incidental teaching with preschool children with ASD. Three interventionists were taught to implement incidental teaching using a telepractice training package consisting of an online module, self-evaluation, and delayed performance feedback delivered via videoconferencing. A single-case multiple-baseline across-participant design was employed to evaluate the effects of the telepractice training package on interventionist acquisition and maintenance of incidental teaching. The distal effects of interventionist implementation of incidental teaching on child mands were also evaluated. Results showed that following the telepractice training program, interventionist implementation fidelity improved and child mands increased. Within six telepractice sessions, all interventionists reached the preset performance criteria of four consecutive sessions above 90 % fidelity. Changes in interventionist and child behaviors maintained at 2- and 4-week follow-up sessions. Taken together, these results suggest that telepractice is a promising method of providing instruction in incidental teaching to interventionists of young children with ASD. 相似文献
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Much of the research on infertility reinforces differing effects for women and men, with women reporting more serious repercussions medically, psychologically, and socially. However, the unique counseling needs of infertile women have not been addressed through traditional counseling theory. The Relational Model (J. V. Jordan, 1995) of women's development is a theory that explains women's development in a context of relationships, specifically relationships that promote growth for self and others. This model is applied to counseling women who are experiencing infertility, and a case presentation is provided to illustrate the approach. 相似文献
70.
Valerie L. Schwiebert Jane E. Myers Carol Dice 《Journal of counseling and development : JCD》2000,78(2):123-129
Counselors working with older adults may encounter situations that are not directly addressed by the ethical standards of the American Counseling Association (1995). After an extensive review of the literature, the Standards Committee of the Association for Adult Development and Aging (1998) identified 3 areas of concern: older adults with cognitive impairments, older adults who are the victims of abuse, and older adults with a terminal illness. This article examines the unique needs of older adults with these concerns and proposes guidelines for counselors working with such clients. 相似文献