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201.
Gabrieli JD Vaidya CJ Stone M Francis WS Thompson-Schill SL Fleischman DA Tinklenberg JR Yesavage JA Wilson RS 《Journal of experimental psychology. General》1999,128(4):479-498
Four experiments examined a distinction between kinds of repetition priming which involve either the identification of the form or meaning of a stimulus or the production of a response on the basis of a cue. Patients with Alzheimer's disease had intact priming on picture-naming and category-exemplar identification tasks and impaired priming on word-stem completion and category-exemplar production tasks. Division of study-phase attention in healthy participants reduced priming on word-stem completion and category-exemplar production tasks but not on picture-naming and category-exemplar identification tasks. The parallel dissociations in normal and abnormal memory cannot be explained by implicit-explicit or perceptual-conceptual distinctions but are explained by an identification-production distinction. There may be separable cognitive and neural bases for implicit modulation of identification and production forms of knowledge. 相似文献
202.
Convergent cortical representation of semantic processing in bilinguals 总被引:12,自引:0,他引:12
Illes J Francis WS Desmond JE Gabrieli JD Glover GH Poldrack R Lee CJ Wagner AD 《Brain and language》1999,70(3):347-363
This study examined whether semantic processes in two languages (English and Spanish) are mediated by a common neural system in fluent bilinguals who acquired their second language years after acquiring their first language. Functional magnetic resonance imaging was performed while bilingual participants made semantic and nonsemantic decisions about words in Spanish and English. There was greater activation for semantic relative to nonsemantic decisions in left and right frontal regions, with greater left frontal activation. The locations of activations were similar for both languages, and no differences were found when semantic decisions for English and Spanish words were compared directly. These results demonstrate a shared frontal lobe system for semantic analysis of the languages and are consistent with cognitive research on bilingualism indicating that the two languages of a bilingual person access a common semantic system. 相似文献
203.
A sample of 565 female stipendiary Anglican clergy in the UK completed the short form Revised Eysenck Personality Questionnaire together with indices of satisfaction with ministry and of dissatisfaction with ministry. The data demonstrate that satisfaction with ministry is associated with stable extraversion, while dissatisfaction with ministry is associated with toughminded neuroticism. Satisfaction and dissatisfaction with ministry are not opposite ends of the same continuum.
Pastoral Theology and Mansel Jones Fellow at Trinity College 相似文献
204.
Memory for colours presented in isolation was compared with that for colours presented as part of a clip-art image or as part of a non-meaningful, Mondrian-like image. The area under the Receiver Operating Characteristic for deciding that two colours, presented at different delay intervals, were the same or different provided an index of memory for colour. The provision of a context reduced the decay of memory, regardless of whether the context was meaningful (clip-art images) or non-meaningful (Mondrian-like images). The result was seen as a generalisation of the auditory phenomenon of profile analysis, in which memory for the amplitude of a single component of a complex sound is more stable than that for the component in isolation. 相似文献
205.
Researchers conducting longitudinal studies with children or adults are inevitably confronted with problems of attrition and missing data. Missing data in longitudinal studies is frequently handled by excluding from analyses those cases for whom data are incomplete. This approach to missing data is not optimal. On the one hand, if data are missing at random, then dropping incomplete cases ignores information collected on those cases that could be used to improve estimates of population parameters (e.g., means, variances, covariances, and growth rates) and improve the power of significance tests of statistical hypotheses. On the other hand, if data are not missing at random, then dropping incomplete cases leads to biased parameter estimates and hypothesis tests that may be internally and externally invalid. This study uses three years of follow-up data from a longitudinal investigation of neuropsychological outcomes of cancer in children to demonstrate the problems presented by missing data in repeated measures designs and some solutions. In evaluating potential biasing effects of attrition, the study extends previous research on neuropsychological outcomes in pediatric cancer by inclusion of patients whose disease had relapsed, and by comparison of surviving and nonsurviving patients. Although the data presented have specific relevance to the study of neuropsychological outcome in pediatric cancer, the problems of missing data and the solutions presented are relevant to a wide variety of diseases and conditions of interest to researchers in child and adult neuropsychology. 相似文献
206.
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208.
Three experiments dealing with hemispheric specialization are presented. In Experiment 1, words and/or faces were presented tachistoscopically to the left or right of fixation. Words were more accurately identified in the right visual field and faces were more accurately identified in the left visual field. A forced choice error analysis for words indicated that errors made for word stimuli were most frequently visually similar words and this effect was particularly pronounced in the left visual field. Two additional experiments supported this finding. On the basis of the results, it was argued that word identification is a multistage process, with visual feature analysis carried out by the right hemisphere and identification and naming by the left hemisphere. In addition, Kinsbourne's attentional model of brain function was rejected in favor of an anatomical model which suggests that simultaneous processing of verbal and nonverbal information does not constrict the attention of either hemisphere. 相似文献
209.
Martin Fishbein David Trafimow Claudette Francis Michael Helquist M. Ann Eustace Michelle Ooms Susan E. Middlestadt 《Journal of applied social psychology》1993,23(9):687-702
The present paper presents the results of AIDS Knowledge, Attitudes, Beliefs, and Practices (KABP) surveys conducted in two Caribbean countries: St. Vincent and St. Lucia. Despite religious, socioeconomic, and literacy differences between the two countries, their citizens are remarkably similar with respect to AIDS knowledge, attitudes, beliefs, and practices. The major differences between the two countries concern the perception of AIDS risk and the relative position of AIDS as a serious problem facing the country. These differences, however, appear unrelated to AIDS knowledge, sexual practices, or the likelihood of engaging in AIDS-protective behaviors. These findings question the role of perceived risk of AIDS as a determinant of AIDS-protective behaviors, and, more important, they question the utility of increasing perceived risk as a strategy in AIDS prevention programs. 相似文献
210.
Johnny L. Matson Jay A. Sevin Margaret L. Box Kelley L. Francis Bart M. Sevin 《Journal of applied behavior analysis》1993,26(3):389-398
Three children with autism and mental retardation were treated for deficits in self-initiated speech. A novel treatment package employing visual cue fading was compared with a graduated time-delay procedure previously shown to be effective for increasing self-initiated language. Both treatments included training multiple self-initiated verbalizations using multiple therapists and settings. Both treatments were efffective, with no differences in measures of acquisition of target phrases, maintenance of behavioral gains, acquisition with additional therapists and settings, and social validity. 相似文献