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21.
Neil H. Timm 《Psychometrika》1970,35(4):417-437
Employing simulated data, several methods for estimating correlation and variance-covariance matrices are studied for observations missing at random from data matrices. The effect of sample size, number of variables, percent of missing data and average intercorrelations of variables are examined for several proposed methods.The author is indebted to Professors Leonard A. Marascuilo, Gus W. Haggstrom, especially Henry F. Kaiser for their invaluable suggestions throughout this work. Appreciation is also extended to the Computer Center facility of the University of California at Berkeley for the use of computer time to complete the necessary computations. 相似文献
22.
Drug effects in squirrel monkeys trained on a multiple schedule with a punishment contingency 总被引:1,自引:0,他引:1
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H. M. Hanson J. J. Witoslawski E. H. Campbell 《Journal of the experimental analysis of behavior》1967,10(6):565-569
The behavior of four monkeys trained on a multiple schedule was differentially sensitive to selected pharmacological agents. The three components of the multiple schedule were: (1) a variable-interval schedule in which responses were reinforced on the average of once per minute; (2) a concurrent schedule in which every tenth response was reinforced and every fifteenth response, on the average, was shocked; and, (3) a neutral stimulus in the presence of which responses were neither reinforced nor shocked. Pentobarbital, chlordiazepoxide, and meprobamate increased responding during each of the components. Scopolamine and d-amphetamine decreased variable-interval performance, had minimal effects on performance during the concurrent-schedule component, and increased responding in the presence of the neutral stimulus. Chlorpromazine decreased variable-interval responding and had slight effects on the responding during the other two components. 相似文献
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Matthew G. Hile Donna M. Campbell Bagher B. Ghobary Marcie N. Desrochers 《Behavior research methods》1993,25(2):195-198
The development of expert and decision support systems requires the collection, organization, codification, and storage of a body of specialized knowledge. The development, using reconstructive methods, of two such knowledge bases, the first containing the current scientific literature and the second containing an expert’s knowledge, is described for an automated decision support system, the Mental Retardation-Expert. This system provides practitioners with assistance in the treatment of aggressive, self-injurious, and destructive behaviors displayed by individuals with mental retardation or developmental disabilities. The average interobserver reliability of the expert knowledge base ranged from 92.5% to 95.0% when calculated across four clinicians’ assessments of 31 abstracted cases. 相似文献
26.
Jeffrey L. Geller Jonathon Erlen Neil S. Kaye William H. Fisher 《Behavioral sciences & the law》1990,8(1):3-26
Feigned insanity in nineteenth-century America is appraised through a review of the medical and legal literature. The authors focus on the explanations for feigning, procedures used in uncovering feigning, and the role of feigning in the courtroom. This discussion of feigned insanity demonstrates the remarkable consistency of approach to this form of malingering over the past 200 years. 相似文献
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Neil Anderson Othman Alkhadher Eamonn Ferguson Fiona Patterson Nicole Cunningham-Snell 《International Journal of Selection & Assessment》1995,3(1):62-66
In a new series of regular reports, research groups active in personnel psychology from a number of countries will present a briefing on work-in-progress. In the first in this series, the HRM Group at the Department of Psychology, University of Nottingham, describe their ongoing work into organization change and training validation, employee socialization, computer-based testing, and personality test construction and assessment centre validation. 相似文献
29.
Procurement of organs from non-heart-beating cadaver donors raises concerns. Standards for optimal patient care during withdrawal of life-sustaining therapy are evolving and continue to be debated and studied. Consensus on specific procedures and methods has not been attained, however, and protocols for the procurement of organs from patients following the withdrawal of life-sustaining therapies may compromise the evolving standards and harm the patient and the attendant family. In addition, there is little evidence to suggest that such protocols will significantly increase the number of organs procured. "Non-heart-beating cadaver" protocols that do not give comprehensive attention to optimal patient/family care at the time of withdrawal of life-sustaining therapy ought not to be endorsed. 相似文献
30.
Cris M. Sullivan Rebecca Campbell Holly Angelique Kimberly K. Eby William S. Davidson II 《American journal of community psychology》1994,22(1):101-122
Presented the 6-month follow-up findings of an experimental intervention designed to provide postshelter advocacy services
to women with abusive partners. The intervention involved randomly assigning half the research participants to receive the
free services of an advocate, 4 to 6 hours per week, for the first 10 weeks postshelter. One hundred forty-one battered women
were interviewed about their experiences immediately upon their exit from a domestic violence shelter: 95% of the sample were
interviewed 10 weeks thereafter (postintervention), and 93% were successfully tracked and interviewed 6 months later. At the
6-month follow-up, participants in both groups reported increased social support, increased quality of life, less depression,
less emotional attachment to their assailants, and an increased sense of personal power. Although women in both groups reported
some decrease in physical abuse over time, there were no statistically significant differences between those with and those
without advocates, and abuse continued to be a problem for many women. Those who were still involved with their assailants
continued to experience higher levels of abuse and had been more economically dependent upon the men prior to entering the
shelter. Women who had worked with advocates continued to report being more satisfied with their overall quality of life than
did the women in the control group.
The authors thank the Editor and anonymous reviewers for their helpful comments. Thanks also to all present and past staff
of the Community Advocacy Project, who helped in data collection and analyses. This work was supported by National Institute
of Mental Health Grant 1R01 MH 44849. 相似文献