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421.
In the analysis of multifactor, longitudinal data, it has long been the practice of investigators to factor analyze the data in each time period separately and then compare the factor structures by eye. This has obvious problems and various measures of similarity were devised, none of which really worked properly. In recent years, other procedures have been proposed to better handle these sorts of data (i.e., Corballis, 1970; Jöreskog, 1970; Tucker, 1966). Tucker’s solution is termed “3-mode factor analysis,” which is essentially the Eckart-Young decomposition of a set of matrices that are derived by collapsing a tensor of order three. It has the advantage of combining the factor analyzes of each time period and indicating how the changes occur. 相似文献
422.
423.
Magana JR Ferreira-pinto JB Blair M Mata A 《Revista latinoamericana de psicología》1992,24(1-2):97-108
The problem-posing methodology of Brazilian educator Paulo Freire, using the reading circle approach previously deployed in successful literacy campaigns in developing countries, is introduced for application in AIDS information programs. The basis of this educational process is the dialogue where those to be educated resolve their problems by evaluating information critically, capturing concepts by codification and decodification, and transmitting information by creating relevant educational materials. Health circles are organized with women as educators to impart knowledge about AIDS and HIV: definitions, epidemiological components (sex, age, and risk behavior), means of transmission, stages of the progression of AIDS, prevention of HIV infection, and tests for detecting HIV antibodies. The dialogue explores knowledge and feelings about AIDS and how it affects life in the community reveals personal experiences and accounts of knowing someone who was HIV-positive, and develops action plans to minimize AIDS cases in the community. The Latin population of California, mainly of Mexican origin, with low levels of education, income, and acculturation and a high incidence of AIDS, is an appropriate target of such intervention. In 1980, there were 12.3 million people of Hispanic origin in the US. In August 1990, there were 143,280 persons diagnoses with AIDS according to the Centers for Disease Control. 78,878 of these (55%) were Anglos, and 21,752 (15%) were Hispanics. Among the Anglos, the incidence was 300/million inhabitants, while among Hispanics, it was 1059/million, a 3-field higher rate. 相似文献
424.
This article highlights the need for a clearer conceptual appreciation of the relationships among and between predictors and criteria, and for a better understanding of measurement issues in selection. A process model of selection is outlined that includes recent research on the changing relationships of ability to performance at different stages of skill acquisition, the interaction between type of task and validity, the role of motivational constructs in the measurement and validation process, and the reciprocally interacting influences of work experience and individual characteristics. Comment is offered on issues such as general versus specific abilities, the ‘big five’in personality, aptitude by treatment or training interactions and maximal versus typical performance. Measurement issues are discussed throughout, but particularly in relation to the assessment process. 相似文献
425.
Rita Kenyon-Jump M. Michele Burnette Malcolm Robertson 《Journal of psychopathology and behavioral assessment》1991,13(3):225-240
Using anatomical dolls, the play behaviors of nine sexually abused preschool children (five males, four females), ranging in age from 3 to 5 years, were compared with nine preschool children for whom there was no suspicion of sexual abuse and who were matched on the basis of age, gender, race, family status, and socioeconomic status. There was no significant difference between the two groups on explicit sexual behavior (vaginal, oral, and anal intercourse with thrusting motions between the dolls or between the child and the dolls and masturbation by the child). The groups were significantly [t(8)=2.19, p <.05; Wilcoxon W=6, p <.05) different when behaviors with suspicious sexual implication were combined with explicit sexual behaviors. There were no differences between the groups on measures of nonsexual behavior. The occurrence of the suspicious sexual behaviors is discussed and reviews of previous doll research and physical evidence of child sexual abuse are provided.This project was supported in part by a grant from The Graduate College of Western Michigan University, Kalamazoo, Michigan. 相似文献
426.
Colleen R. McGowan Cynthia M. Bulik Leonard H. Epstein David J. Kupfer Robert J. Robertson 《Journal of psychopathology and behavioral assessment》1984,6(1):51-57
The relationship between activity counts from the large-scale integrated sensor (LSI), placed at the hip and ankle, and heart rate-estimated energy expenditure was examined in three nonobese males during three conditions: normal morning activities, a 1-mi walk, and a 2-mi walk. Results showed that estimated caloric expenditure was related to activity counts for both monitoring placements, with correlations between counts and energy expenditure exceedingr=.90. These results show that energy expenditure in the activities sampled can be reliably estimated using activity monitors.This research was supported in part by a grant provided by The John D. and Catherine T. MacArthur Foundation Research Network on the Psychobiology of Depression, Clinical Research Center Grant 5-30915 from the NIMH, and Grant HD 16411 from the NICHD awarded to Dr. Epstein. 相似文献
427.
Subjective assessment of sleep by Sleep Questionnaire 总被引:4,自引:0,他引:4
A 55-item Sleep Questionnaire is presented for possible use as a standardized instrument in psychological studies of sleep. A factor analysis of responses from 145 adults to the questionnaire indicated 7 factors accounted for 71.7% of the total variance. These factors are congruent with sleep dimensions discussed in the literature and with other factor analytic investigations. A set of 11 clinical judgment scales are also presented. The reliabilities of both factor and clinical scales are adequate as judged by test-retest, internal consistency, and comparisons of self vs spouse ratings. The construct validity is supported by three studies showing significant differences between (a) medical patients with and without sleep disturbances, (b) psychiatric patients with and without symptoms of depression, and (c) short and long sleepers. 相似文献
428.
In this paper we consider the effect of imposing memory restrictions on the accumulator and random-walk models of choice behavior outlined by Audley (Psychological Review, 1960, 67, 1–15). Specifically, it is assumed that subjects apply criteria to the numbers of impulses received, and that if the criteria are not satisfied by the time w impulses have been received, then thereafter the criteria are only applied to w impulses, which could, for example, be the last w impulses received. Exact and approximate mathematical approaches and simulation techniques are presented in detail. The results obtained demonstrate that both the restricted accumulator and the restricted random-walk models can make qualitative predictions in line with much recent data. 相似文献
429.
When people are asked moderately difficult questions, they often avert their gazes. We report five experiments in which we documented this phenomenon. They demonstrate that (1) the frequency of gaze aversion is related to the difficulty of cognitive processing, (2) this behavior cannot be due solely to demand characteristics or embarrassment, and (3) the behavior is functional: Averting the gaze improves performance. We speculate that averting the gaze helps people to disengage from environmental stimulation and thereby enhances the efficiency of cognitive processing directed by nonenvironmental stimulation. 相似文献
430.
Two experiments are reported in which expert and novice gymnasts were required to walk across a balance beam as quickly as possible in various vision conditions. In Experiment 1, experts walked faster than novices in all vision conditions, showing the greatest superiority when vision was completely eliminated. Novices were more dependent on vision and were able to maintain their performance as long as a visual sample was available every 250 ms (i.e: 4-Hz samples).The results of Experiment 2 indicate that differences between expert and novice performers in the no-vision condition were not related to the use of a short-term visual representation of the movement environment. Our movement time findings are problematic for specificity of learning models of skill acquisition. As well, film data collected in Experiment 2 were not consistent with models that propose a transition from closed-loop to open-loop control. 相似文献