Vec and vech operators for matrices,with some uses in jacobians and multivariate statistics

The vec of a matrix X stacks columns of X one under another in a single column; the vech of a square matrix X does the same thing but starting each column at its diagonal element. The Jacobian of a one-to-one transformation X → Y is then ∣∣?(vecX)/?(vecY) ∣∣ when X and Y each have functionally independent elements; it is ∣∣ ?(vechX)/?(vechY) ∣∣ when X and Y are symmetric; and there is a general form for when X and Y are other patterned matrices. Kronecker product properties of vec(ABC) permit easy evaluation of this determinant in many cases. The vec and vech operators are also very convenient in developing results in multivariate statistics.     

Small area indicators and social change

This article examines the relevance of measures of social change for small areas and how these can be used in need assessment. Specifically, this article explicates the problems of selecting a limited group of indicators from among the broad panoply of indicators available, and of determining the different kinds of information provided by indicators controlling for the level of aggregation. The use of small area social indicators to do need assessment is illustrated using data from the 1970 and 1980 Health Demographic Profile System.     

Deterrence and the Morally Committed*

The deterrence literature suggests that perceptions of the threat of legal sanctions influence the extent of involvement in illegal behavior only among those individuals who have not internalized legal norms. Individuals who are morally committed to a norm will not violate it, regardless of their perceptions of the certainty and severity of legal sanctions. We argue that this hypothesis relegates coercion to a position of secondary importance in a theory of social control; and we offer a rationale for an alternative hypothesis that perceived sanction threat has a deterrent effect at all levels of moral commitment. Our analysis, using refined measures of the variables which have emerged in recent research, supports our alternative hypothesis.     

The Occupational Prestige Structure: a Multidimensional Scaling Approach

Occupational prestige scores are one of the more frequently used variables in sociological research. However, the methods which have been employed in the past to obtain such scores are based on the implicit assumption that the occupational prestige structure is unidimensional. The technique of smallest space analysis, which makes no assumption about dimensionality, suggests that this previous assumption has produced a somewhat inaccurate picture of the occupational prestige structure.     

Professional Orientation, Associational Membership, and Teacher Militancy

Using work orientation and organizational membership as critical variables, the author developed a model to explain teacher militancy. It was hypothesized that the American Federation of Teachers (AFT) members would be more professionally oriented than the National Education Association (NEA) members; furthermore, that the more professionally oriented teachers would be more alienated, would have more frequent conflict with the administration of the school system, and would be more militant. The findings supported these hypotheses. However, within the work orientation categories there were some unanticipated findings. For AFT members, the "Professionally Oriented" members were the more alienated, had more frequent conflicts with the administration, and were more militant. For NEA members, the "Job Bureaucrats," and not the "Professionally Oriented," were found to be more alienated, to have more frequent conflicts with the administration, and to be more militant. The data suggest that AFT and NEA members hold quite different definitions of professionalism and of the appropriate role of the public school teacher.     

A Study of Reputational Community Leaders Using The Concepts of Exchange and Coordinative Positions*

The general purposes of this study were to investigate the group and organizational affiliates of reputed community leaders in a rural community. The specific hypotheses were that the higher one is ranked as a reputational leader, (1) the more exchange influence he will likely have accumulated through occupying economic, kinship, occupational, ownership, and political-governmental positions which are reputedly influential in the community, (2) the more likely he is to be an active participant in formal and/or informal coordinative interstitial groups in the community, and (3) the more likely he is to be an active participant in those formal coordinative groups which are reputed to be influential over community affairs. The hypotheses were tested by comparing the sets of rankings of twenty-eight reputational leaders with (1) their rankings in terms of exchange positions scores, (2) their rankings in terms of social participation scores, and (3) their rankings in terms of weighted social participation scores. The results of the study tended to support the hypotheses, as stated, for the community involved.     

Assessing University Students’ Self-efficacy to Employ Alcohol-Related Harm Reduction Strategies

Abstract

Objective: Develop and evaluate key psychometric properties of a self-report questionnaire specifically designed to assess student drinkers’ self-confidence to employ a variety of strategies intended to reduce unhealthy consequences of high-risk drinking. Methods: Four hundred ninety-eight participants rated their confidence (from “not at all confident” to “completely confident”) to employ 17 harm reduction strategies when drinking. Results: Factor analysis and internal consistency reliability analyses indicated that the 17 items constitute a single scale with good test–retest reliability. Consistent with other research examining previous use of such strategies, women in our sample reported significantly higher harm reduction self-efficacy than did men. Harm reduction self-efficacy was also associated with reported number of high-risk drinking episodes in the previous 2 weeks. Conclusion: This brief and easily administered questionnaire holds promise as a clinical tool to identify individuals with low harm reduction self-efficacy and as an outcome measure for health promotion and educational interventions.     

The Case of Sybil in the Teaching of Psychology

What do psychology professors today typically tell their students about the case of Sybil (F R. Schreiber, 1973}—once considered the classic case of multiple personality disorder (MPD), until gradually revealed to be afraud by new evidence (R. W Rieber, 1998)? A 14-item survey was completed by a national sample of 125 college psychology teachers. It was found that a sizable minority of teachers discussMPD (35%) or Sybil (23%) in their classes, 40% continue to regard Sybil as a classic case of MPD, and83% report being only slightly or not at allfamiliar with new revelations about the Sybil case. Psychology teachers are offered 5 guidelines for accurately teaching about Sybil today.     

Birth Mothers' Perceptions of Their Parented Children's Knowledge of and Involvement in Adoption

An examination of birth mothers' perceptions of the relationship between the children she is parenting and the children she placed for adoption offers unique insight into the life course of openness. In the present study, 94 birth mothers from the United States participated in a semi-structured interview, discussing their oldest parented children's knowledge of and experience with their siblings placed for adoption. Results show that 59 birth mothers have an oldest parented child who is aware of their adopted sibling, although 4 of these do not know their true relationship with the adopted sibling. Of these, 27 had direct contact with the adopted sibling, 4 had indirect contact through the birth mother, and 1 had previous contact that has since ceased. A majority of birth mothers indicated that their oldest parented child would like more contact, direct contact, or more information about the adopted youth. Implications for research and practice with birth mothers and their children separated by adoption are discussed.     

Awareness of LGBT Aging Issues Among Aging Services Network Providers

Very little research exists examining the interactions between community-based aging service providers and lesbian, gay, bisexual, and transgender (LGBT) older adults. It is unclear whether mainstream aging services acknowledge the needs of this community. We asked direct care providers and administrators in the Michigan aging services network to describe their work with LGBT older adults. We found there are very few services specific to the needs of older LGBT adults and very little outreach to this community. At the agency level, resistance to providing services was found.