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991.
The application of latent class models in adaptive testing 总被引:1,自引:0,他引:1
992.
993.
994.
Priming effects on lexical access and decision processes: A signal-detection analysis 总被引:1,自引:0,他引:1
Summary Signal-detection methodology was employed to examine the assumption that in a lexical-decision task context effects are primarily the result of post-access processes. Experiment 1, in which prime-relatedness was varied within subjects, found changes in target sensitivity (d) without corresponding changes in the response criterion. This outcome was interpreted as evidence that prior context facilitates lexical access, whereas post-access contributions remain constant across conditions. When prime-relatedness was varied between subjects in Experiment 2, the lexical-decision task showed differing context effects on access processes as well as on post-access processes. It was concluded that subjects adopt a single response criterion suited to maximize task performance. The particular response criterion adopted is a function of the stimulus set rather than a function of the relationship between prime and target on any single trial. Finally, it was concluded that post-access strategies alone are insufficient to account for context effects obtained when typical lexical-decision-task procedures are used, or to account for the magnitude of the differences obtained between the present experiments. 相似文献
995.
996.
Maxine L. Stitzer George E. Bigelow Ira A. Liebson James W. Hawthorne 《Journal of applied behavior analysis》1982,15(4):493-503
This study evaluated contingent reinforcement for benzodiazepine-free urines as a therapeutic intervention for promoting reduced use of supplemental benzodiazepine drugs among methadone maintenance outpatients. Ten methadone maintenance patients were selected for participation on the basis of positive urinalysis results. During a 12-week intervention period these patients were offered clinic privileges, including monetary payments or methadone take-home doses, contingent on benzodiazepine negative urinalysis test results. Eight of ten participants responded to the intervention with at least 2.5 weeks of consecutive clean urines. An increase in benzodiazepine-negative tests during the contingent reinforcement period was significant for the group as a whole. The results suggest that more widespread application of contingent reinforcement procedures may be warranted in drug abuse treatment clinics. 相似文献
997.
George Banziger Richard K. Smith David Foos 《American journal of community psychology》1982,10(6):669-686
This exploratory study examined the relative predictive strengths of selected economic factors (welfare cases, banking activity, unemployment, retail sales, motor vehicle sales) for utilization of mental health services (hotline calls, intake at community mental health centers and admissions at mental hospitals) over a 78-month period in rural Appalachia. Monthly data were tested for autocorrelation and adjusted for seasonality and inflation. Regression analyses indicated that (a) economic factors did account for a considerable portion of variance in mental health factors; (b) these factors predicted mental hospital admissions and hotline calls; (c) strengths of these relationships were quite consistent across the areas sampled, but the directions sometimes were different; (d) welfare factors were the best predictors of utilization; (e) Aid to Families with Dependent Children was generally the best single predictor of utilization, especially when mental health factors were lagged by 3 months. A causative model describing the decision-making process involved in the utilization of mental health services was presented.
This research was supported by grant number 1R01 MH34382 01 from the National Institute of Mental Health, Division of Biometry and Epidemiology, 1980–1981. The empirical data were collected with the help of the Shawnee Mental Health Services of Marietta, Ohio, Western District Guidance Center of Parkersburg, West Virginia, the Ohio Department, the Administrative Office of the U.S. Court, the Federal Reserve Banks of Public Welfare, the West Virginia Department of Health, the West Virginia Tax DEpartment, the Administrative Office of the U.S. Court, the Federal Reserve Banks of Cleveland and of Richmond, and Parkersburg National Bank. Robert Kirkbride of Marietta College and Robert Evans of People's Bank of Marietta, Ohio, provided economic advice. The computer facilities of Marietta College were used to store and analyze data. Barrie Gardner and Lucinda Pyatt, as research assistants, collected and analyzed much of the data. 相似文献
998.
Language measures of receptive and expressive vocabulary, story telling, and immediate verbal memory, as well as two perceptual tests, were administered to a group of developmentally disabled children, and three groups of normal children, one matched for chronological age, one for mean length of utterance, and one for performance on one of the perceptual tests. When diagnostic subgroups of “autism,” “childhood schizophrenia,” and “other severe disturbance” were formed using standard diagnostic tools, no language differences were found between diagnostic subgroups. When compared with the normal control groups, many of the language skills of the entire group of disabled children, and of the autistic children alone, were rather evenly delayed, showing only a relative sparing of the naming function, and a relative deficit on immediate verbal memory. Furthermore, a high correlation was found in a small subsample between the difficulty levels of morphemes in the disabled children and those reported for young normal children. Experienced special-education and early-childhood teachers could not discriminate the stories of the disabled children from those of young normal children. Analysis of the disabled children's error strategies, however, revealed features of their language not found in normal children's language: (1) extreme perseveration in test answers and stories, (2) attention to minor features of test stimuli, and (3) failure to adopt alternate, flexible communicative strategies. We conclude that the language acquisition of the developmentally disabled children is delayed but not deviant in its semantic and syntactic competence, and that current diagnostic practice does not differentiate linguistically distinct subgroups. We further argue that where developmentally disabled children do exhibit aberrant features of language, such deviance parallels similar features in other cognitive skills, and is not unique to language. 相似文献
999.
This study inspected the scores obtained on a ‘Lie’ scale in relation to teachers' observations on untruthful behaviour among four adolescent samples. The first and second groups were composed of 81 boys and 81 girls attending two comprehensive schools. The third group consisted of 81 boys who had been committed to a training school for delinquent boys and the fourth of 42 boys placed in a secure unit attached to the training school. The overall pattern of results suggested that the ‘Lie’ scale was associated with pupil characteristics of truthfulness and social conformity. The implications of these findings are discussed in relation to the meaning of the ‘Lie’ scale and its usefulness in practice. 相似文献
1000.
George R. Mastroianni 《Attention, perception & psychophysics》1982,31(6):581-584
A critical analysis of a recent paper by Shelton and Searle (1980) on the visual facilitation of auditory localization is presented. The author claims that Shelton and Searle fail to make the relevant distinction between Warren’s (1970) frame of reference hypothesis and Jones’s (1975) spatial memory hypothesis. Shelton and Searle’s claim that they have demonstrated the existence of two distinct forms of visual facilitation is questioned. Data from an experiment in which auditory localization was tested under two levels of illumination (light and dark) and with two kinds of eye movement instructions (fixed and movement) are presented. The results show that facilitation occurs only when eye movements take place in a lighted environment. This is interpreted as supporting Warren’s frame of reference hypothesis. 相似文献