Evaluation of three circadian rhythm questionnaires with suggestions for an improved measure of morningness
Article Abstract:
Circadian rhythms, cyclic fluctuations in many physiological and psychological functions, are thought to influence adjustment to shiftwork. A widely acknowledged individual difference in circadian rhythms, commonly called morningness, indicates preferences associated with morning or evening activities. Various self-report instruments have been developed to measure morningness, although little measurement data have been published for these scales. Because morningness scales are being used to select workers for night shiftwork, psychometric evaluations of these scales are needed. Psychometric assessments of undergraduate responses (N=501) on three widely used scales indicate internal (interitem) measurement deficiencies in all three. Therefore, a 13-item scale was developed that distills the best items from two of these scales. Relationships between the new composite scale and external criteria are comparable with or stronger than similar relationships between the published scales and external criteria. (Reprinted by permission of the publisher.)
Publication Name: Journal of Applied Psychology
Subject: Social sciences
ISSN: 0021-9010
Year: 1989
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Dispositional approach to job satisfaction: role of negative affectivity
Article Abstract:
The role of negative affectivity (NA) as a dispositional determinant of reported job satisfaction was examined. NA is an individual difference variable characterized by a disposition to experience aversive emotional states. People high in NA tend to be distressed, agitated, pessimistic, and dissatisfied. In Study 1, a laboratory study, high- and low-NA subjects completed either an enriched or unenriched task. Both NA level and task design influenced reported task satisfaction, although the influence of task design was much stronger. In Study 2, professional workers completed the Job Diagnostic Survey, the Job Descriptive Index, and a measure of NA. NA was a significant predictor of two measures of job satisfaction, even after job characteristics had been considered. The implications of these findings for a dispositional approach to job satisfaction and suggestions for future research are discussed. (Reprinted by permission of the publisher.)
Publication Name: Journal of Applied Psychology
Subject: Social sciences
ISSN: 0021-9010
Year: 1989
User Contributions:
Comment about this article or add new information about this topic:
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