On the precision of a euclidean structure

This paper is concerned with the development of a measure of the precision of a multidimensional euclidean structure. The measure is a precision index for each point in the structure, assuming that all the other points are precisely located. The measure is defined and two numerical methods are presented for its calculation. A small Monte Carlo study of the measure's behavior is performed and findings discussed.The authors are indebted to Bert F. Green, Jr., Ronald Helms, Andrea Sedlak, and three anonymous reviewers for their valuable comments on earlier drafts of this paper.     

Caution indices based on item response theory

A new family of indices was introduced earlier as a link between two approaches: One based on item response theory and the other on sample statistics. In this study, the statistical properties of these indices are investigated and then the relationships to Guttman Scales, and to item and person response curves are discussed. Further, these indices are standardized, and an example of their potential usefulness for diagnosing students' misconceptions is shown.This research was sponsored by the Personnel and Training Research Program, Psychological Sciences Division, Office of Naval Research, under contract No. N00014-82-K-0604.     

Self-Concepts of Hospitalized and Day-Care Psychiatric Patients

Abstract

The authors administered questionnaires to 44 hospitalized and 55 day-care psychiatric patients in Hong Kong. The groups were similar in sex, age, and education. The hospitalized participants, compared with the day-care participants, showed significantly higher self-concepts in general as well as in the particular aspects of social and personal aspirations. The findings indicate that support at the community level is important to help the psychiatric patients' transition from hospital care to day care.     

“Delayed Response” as Tested by three Methods and its Relation to Other Learning Situations

The so-called “nervous habits” of 198 students were assessed by time-sampling 22 movement categories. Concentration of manipulatory behavior in the head and hand areas suggested that the stimulation generated by these activities is of some importance. Compared to men, women showed less facial manipulation and less leg and foot movement, but compensated, particularly by more nail-biting and manicure. Category scores did not have significant linear correlations with either Extraversion or Neuroticism scores on the Eysenck Personality Inventory (EPI). This may be due to idiosyncrasies in movement patterns.     

Measuring Schwartz's values in childhood: Multidimensional scaling across instruments and cultures

The Picture-Based Value Survey for Children (PBVS-C; Döring et al., 2010) assesses children's values through self-report and thereby depicts Schwartz's theory of universal human values at an early age. Despite evidence on the PBVS-C's structural validity, there remains an open question: Does the PBVS-C measure the same values as does Schwartz's Portrait Values Questionnaire (PVQ; Schwartz et al., 2001), an established assessment instrument for adult and adolescent respondents? To answer this question about the PBVS-C's validity, Polish (N = 167) and German (N = 119) children's values were measured with both instruments. The multitrait–multimethod correlation matrix (Campbell & Fiske, 1959) of value items from both instruments was analysed with multidimensional scaling (MDS), as proposed by Borg and Groenen (1997). Our structural expectations for the MDS output about the distinctiveness (1) of Schwartz's higher order value types (i.e., traits) and (2) of the two assessment methods (PBVS-C and PVQ) were confirmed in both samples.