경영학 분야의 수면 연구: 측정도구 제안

This study empirically examined the various measures of sleep for management research with the sample of 237 day-shift and night-shift undergraduate students in a private university. Although the PSQI had been developed and selected on clinical grounds of med ical doctors in the University of Pittsburgh, the Cronbach’s α of PSQI 7 dimensions from the data was low level around 0.5, and the number of factors and the factor structure ex tracted from the data were inconsistent and unstable. Prior studies in management had been adopted various measures of sleep duration and sleep quality. The measures of sleep dura tion include the PSQI sleep duration, the PSD sleep duration, and the subjective sleep duration. The measures of sleep quality include the subjective sleep quality, the insomnia scale, and the PSQI qualitative dimension. The PSQI qualitative dimension was not preferred for it had no theoretical grounds and an inconsistent factor structure from the data. The sub jective sleep duration was not preferred for the answers of respondents might be affected by their sleep quality. The PSD sleep duration is conceptually more solid than the PSQI sleep duration is, and the former explained the ego depletion on the regression model better than the latter did. The subjective sleep quality has only one item, which is impossible to analyze the reliability and validity of the measure. The insomnia scale explained the ego depletion on the regression model better than the subjective sleep quality did. Finally, this study suggests ‘relative PSD sleep duration’ and ‘insomnia scale’ as best measures of sleep for man agement research.