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191.
Rapid, automatic access to lexical/semantic knowledge is critical in supporting the tight temporal constraints of on-line sentence comprehension. Based on findings of “abnormal” lexical priming in nonfluent aphasics, the question of disrupted automatic lexical activation has been the focus of many recent efforts to understand their impaired sentence comprehension capabilities. The picture that emerges from this literature is, however, unclear. Nonfluent Broca's aphasic patients showinconsistent,notabsent,lexical priming, and there is little consensus about the conditions under which they do and do not prime. The most parsimonious explanation for the variable findings from priming studies to date is that the primary disturbance in Broca's lexical activation has something to do withspeedof activation. Broca's aphasic patients prime when sufficient time is allowed for activation to spread among associates. To examine this “slowed activation” hypothesis, the time course of lexical activation was examined using a list priming paradigm. Temporal delays between successive words ranged from 300 to 2100 msec. One nonfluent Broca's aphasic patient and one fluent Wernicke's patient were tested. Both patients displayed abnormal priming patterns, though of different sorts. In contrast to elderly subjects, who prime at relatively short interstimulus intervals (ISIs) beginning at 500 msec, the Broca's aphasic subject showed reliable automatic priming but only at a long ISI of 1500 msec. That is, this subject retained the ability to access lexical information automatically if allowed sufficient time to do so, a finding that may help explain disrupted comprehension of normally rapid conversational speech. The Wernicke's aphasic subject, in contrast, showed normally rapid initial activation but continued to show priming over an abnormally long range of delays, from 300 msec through 1100 msec. This protracted priming suggests failure to dampen activation and might explain the semantic confusion exhibited by fluent Wernicke's patients. 相似文献
192.
Dyanne M. Tracy 《Sex roles》1987,17(3-4):115-138
This review of research examines the possible relationships among children's toy playing habits, spatial abilities, and their science and mathematics achievements. Only studies that made use of United States subjects, aged 3- through 13-years-old, are included in the review. Toy playing habits, spatial ability, and science and mathematical achievement appear sex typed. Males and/or children who maintain a masculine sex role orientation tend to play with a wider variety of toys, exhibit superior spatial skills, and maintain greater science and mathematics achievement scores than females and/or children with feminine sex role orientations. 相似文献
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Stephen P. Hinshaw Duane Buhrmester Tracy Heller 《Journal of abnormal child psychology》1989,17(4):393-407
Although stimulant medication reduces hyperactive children's aggression in naturalistic settings, stimulant effects on anger control have not been demonstrated. We therefore assessed the role of methylphenidate in enhancing response to verbal provocation from familiar peers and from role-playing adults. Twenty-four boys with attention deficithyperactivity disorder (ADHD), aged 6–12, received small-group cognitivebehavioral intervention in anger management skills. During posttraining assessments, the children were randomly assigned to placebo versus. 6 mg/kg of methylphenidate. In the peer provocations, methylphenidate enhanced self-control, decreased physical retaliation, and marginally increased the display of coping strategies. Medication and prompting were minimally beneficial in the delayed, adult-administered generalization assessments. Among the issues discussed are (a) differences between peer and adult provocation and (b) the roles of medication dosage and multimodality intervention for promoting socially competent behavior in children with ADHD.We gratefully acknowledge the Fernald Child Study Center of the University of California, Los Angeles, which provided major support for this research. In addition, we acknowledge the dedication of the small-group trainers, too numerous to mention individually, who led the intervention procedures for the children, and the experimenters who performed the individual provocation assessments. The careful behavior observations of Linda Douglas, Rebecca Eiser, Deborah Gibson, Mike Glenn, Melissa Michaelson, Jon Rafuse, Fauzia Simjee, Leslie Sherman, and Madelin Tundidor were central to the study. Finally, our colleagues Barbara Henker and Carol K. Whalen were instrumental in facilitating all aspects of this investigation. 相似文献
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Courtney E. Ahrens Rebecca Campbell N. Karen Ternier-Thames Sharon M. Wasco Tracy Sefl 《Psychology of women quarterly》2007,31(1):38-49
In this study, 102 female rape survivors were interviewed regarding their first post-assault disclosure. Qualitative analysis revealed that nearly 75% of first disclosures were to informal support providers and over one third of the disclosures were not initiated by the survivors themselves. Over half of the survivors received positive reactions and less than one third felt the disclosure had a detrimental impact on their recovery. Loglinear analysis suggested that survivors who actively sought help from informal support providers were more likely to receive positive than negative reactions. In contrast, survivors who actively sought help from formal support providers were more likely to receive negative than positive reactions. When disclosure to formal support providers was initiated by the formal support providers themselves, however, survivors received exclusively positive reactions. Implications for future research are discussed. 相似文献
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Sound attenuation and preferred music in the treatment of problem behavior maintained by escape from noise 下载免费PDF全文
Tracy L. Kettering Wayne W. Fisher Michael E. Kelley Robert H. LaRue 《Journal of applied behavior analysis》2018,51(3):687-693
We examined the extent to which different sounds functioned as motivating operations (MO) that evoked problem behavior during a functional analysis for two participants. Results suggested that escape from loud noises reinforced the problem behavior for one participant and escape from arguing reinforced problem behavior for the other participant. Noncontingent delivery of preferred music through sound‐attenuating headphones decreased problem behavior without the use of extinction for both participants. We discuss the results in terms of the abolishing effects of the intervention. 相似文献
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