Long-term stability and psychometric properties of the CompositeScale of Morningness

ErgonomicsPublished 1 February 1994

Kenneth M. Greenwood

DOI10.1080/00140139408963653

Source URL

Citations99

SJR quartileQ2

SJR score0.74

SNIP1.44

TL;DR

The finding that the CS has good psychometric properties when used on samples of students was replicated and extended to a smaller sample of individuals working on rotating shifts and scores were found to be stable over time and did not change when subjects were exposed to night- and shiftwork.

Abstract

Prompted by some discrepancies in the report detailing the development of the Composite Scale (CS) of Morningness (Smith et al. 1989) this study replicated the examination of the psychometric properties of the CS on a large sample (n = 424) of health science students. It was confirmed that the mean and range of CS scores previously reported were in error. The finding that the CS has good psychometric properties when used on samples of students was replicated and extended to a smaller (n = 35) sample of individuals working on rotating shifts. CS scores were found to be stable over time and did not change when subjects were exposed to night- and shiftwork.

Keywords

Psychology

Journal of Applied PsychologyEvaluation of three circadian rhythm questionnaires with suggestions for an improved measure of morningness.

1,086 Citations1989Carlla S. Smith, C P Reilly +1 more

A 13-item scale was developed that distills the best items from two of the widely used circadian rhythms scales, and Relationships between the new composite scale and external criteria are comparable with or stronger than similar relationships between the published scales and internal criteria.

Biological PsychologyInter-individual differences in the human circadian system: A review

543 Citations1985G.A. Kerkhof

It is argued that the differences in rhythm parameters associated with the personality dimension of introversion-extraversion are the result of exogenous influences in the intrinsic period of the circadian system.

Scandinavian Journal of Work Environment & HealthA diurnal type scale. Construction, consistency and validation in shift work.

428 Citations1980Lars Torsvall, Torbjörn Åkerstedt

View PDF

ErgonomicsTowards a Predictive Test of Adjustment to Shift Work

324 Citations1979Simon Folkard, Timothy H. Monk +1 more

It is concluded that it may prove feasible to develop a questionnaire that would predict the degree to which people's rhythms would adjust to shift work, and that flexibility of sleeping habits and the ability to overcome drowsiness should be components of such a questionnaire.

ErgonomicsThe impact of night work on psychological well-being

182 Citations1989Philip Bohle, Andrew J. Tilley

It is suggested that organisational, behavioural, and physiological factors moderate the impact of night work on psychological well-being, and personality factors do not.

ErgonomicsOptimization of shift work: physiological contributions

41 Citations1987R. Moog

The earlier the circadian phase position the poorer the adaptation to night-shifts, and morning types were not able to adapt even to permanent night-Shifts, while evening types were able to adjust their circadian systems to a slowly rotating shift system and a 25 h-sliding system.

ErgonomicsPsychometric properties of the Diurnal Type Scale of Torsvall and Åkerstedt (1980)

18 Citations1991Kenneth M. Greenwood