A COMPARISON OF TWO ORGANIZATIONAL COMMITMENT SCALES1

This study examines the scale characteristics of two widely utilized measures of organizational commitment. Using data collected from a sample of 1,105 professional accountants, the findings indicated that while both instruments exhibited a high degree of internal reliability, the Porter et al. (1974) instrument exhibited significantly greater predictive validity with respect to intended turnover than did the Hrebiniak and Alutto (1972) instrument. However, for a limited sample of data, no difference was found between the predictive ability of the two measures with respect to actual turnover. In addition, the relationship between a set of ten common predictor variables and organizational commitment was found to be substantially greater when commitment was measured using the Porter et al. instrument.     

EDUCATIONAL REQUIREMENTS: LEGALITY AND VALIDITY1

Educational achievements (e.g., high school diploma, college degree) are frequently used as selection requirements for a wide variety of jobs. Despite this, the legality and validity of this “selection test” has been a neglected subject of study by personnel psychologists. In this article, two important issues concerning educational requirements are discussed. First, court cases are reviewed to gain insight into judicial opinions. Next, validity studies of educational requirements are summarized. The article concludes with suggestions for the proper use and defense of educational requirements.     

Cultural perspectives on romantic love

Culture-related dimensions contribute to a more complete understanding of romantic love. In particular, we suggest that the dimensions of individualism and collectivism, at both societal and psychological levels, offer insights into the nature of romantic love and its perceived importance for marriage. Changes In values pertaining to romantic love and its role In choosing a spouse are evident In several traditionally collectivistic societies and among persons from these societies emigrating to countries such as Canada, Australia, and the United States. Given these trends, we discuss the need to study individualism and collectivism at the psychological level and present findings from our own program of research.     

Diversity of ideas about diversity measurement

Measurement of diversity is important in several sciences but has evolved mainly within ecology. An ecological community with many species is more diverse than one with few but the way the total number of individuals is distributed among the species also influences the degree of diversity or heterogeneity. Although not always explicitly used, it can be shown that diversity is a concept of some importance in psychology, too. In general terms quantification of diversity is related to the apportionment of some quantity into a number of well-defined classes. The dual-concept type of diversity index reflects both the number of classes and the degree of evenness (homogeneity) of the apportionment. The quantity that is distributed has commonly been a population of elements and apportionment homogeneity measures population heterogeneity. The statistical context has dominated the thinking about the measurement of diversity, heterogeneity, and homogeneity. Some well-known indices of diversity and the ideas behind them are discussed. It is concluded that the general geometric representation of homogeneity (similarity) and heterogeneity (dissimilarity) (Junge, 1978; 1991) offers a more general approach to the measurement of diversity.     

Hemispheric asymmetry effects in children studied by dichotic listening and visual half-field testing

Dichotic listening (DL) and visual half-field (VHF) testing were used to study hemisphere asymmetry in a developmental perspective. Five-, 8-, and 11-year-old children were presented lists of fused words using a DL technique in Experiment 1, and 8- and 11-year-old children were presented pictures of common objects using a VHF technique in Experiment 2. In both experiments, measures of identification, free recall, and recognition of the words/pictures were employed. The results revealed effects of ear input (right-ear advantage) and half-field presentation (right visual half-field advantage) for all age groups, although the magnitude of this lateralization effect differed between the three memory measures. The results are discussed in relation to developmental aspects of language laterality, and in relation to the clinical utility of non-invasive lateralization techniques.     

Bilaterally recorded multiple-unit activity of the cingulate cortex during head turning conditioning with unilateral medial forebrain bundle stimulation

Cats were conditioned to turn their heads using a tone conditioned stimulus (CS) and medial forebrain bundle stimulation (MFB) unconditioned stimulus (US). The CS+ was delivered to one ear at a time, in random order, followed by the US. A tone of a different frequency was used as a CS-. The cats learned to respond differentially to the CSs showing head movements of greater acceleration to the CS+ than CS- over sessions. Bilateral recordings of cingulate cortex multiple-unit activity showed increased response amplitudes over sessions and larger responses in the hemisphere ipsilateral to the US. Since ipsilateral multiple-unit responses did not differ for the CSs, the asymmetry was probably due to the sensitizing effect of the unilateral US. Although increases in cingulate cortex neural activity coincided with increases in conditioned head movements, larger activation of the cingulate cortex ipsilateral to the US suggests that the neural changes were independent of these movements.     

Student Attitudinal Changes in a Counseling Ethics Course

The purpose of this study was to investigate ethical attitude changes in counselors in training related to specific topics during a 16-week, two-credit counseling ethics course. This study indicated that significant attitudinal changes occurred related to professional ethics and self-awareness, dual relationships, impairment, and multiculturalism.     

FURTHER TESTS OF THE SCHMIDT-HUNTER BAYESIAN VALIDITY GENERALIZATION PROCEDURE1

Using an improved version of the Bayesian validity generalization model presented in Schmidt and Hunter (1977), this study showed that most of the between-study variation in observed validity coefficients of various aptitude and ability tests for two types of clerical work and for the job of first-line supervisor is artifactual in nature. These results cast additional doubt on the traditional belief that employment test validities are situationally specific. In addition, the results showed that generalization of validities to new settings was justified even where the hypothesis of situational specificity could not be rejected under the standards used in this study. Implications for the use of aptitude and ability tests in selection and for theory development in industrial-organizational psychology are discussed.     

Artists' vulnerability to psychopathology: Towards an integrative cognitive perspective

A relationship is commonly reported between high levels of artistic creativity and mental health problems (e.g., depression or psychosis), and it is now becoming clearer that the divergent cognitive style associated with creativity has commonalities with some of the processes involved in the development and maintenance of some psychological difficulties. Our aim was to investigate the nature of this cognitive style. More specifically, we considered the profile of probabilistic reasoning and associated problem solving abilities, as both of these mechanisms have been found to be integral to major forms of clinical dysfunction. We assessed levels of creative potential, mood, probabilistic reasoning, and problem solving abilities in 66 arts and 85 science undergraduate volunteers. As predicted, art students showed higher levels of creative potential and experienced lower levels of mood than their science peers. Differences in probabilistic reasoning were observed which are in keeping with the pattern reported to be present in those suffering with psychosis in that they tended to ‘jump to conclusions’. Art students also displayed both poorer problem solving abilities and self‐appraisal of their problem solving skills. Our results extend previous findings associated with the mediating role of cognitive processes in the relationship between creativity and some forms of psychopathology. Implications for the prevention and treatment of psychological difficulties in the creative are highlighted.