Stress and Sleep Quality: The Moderating Role of Negative Affectivity
This study was designed to examine the influence of two personality variables (negative affectivity [NA] and positive affectivity [PA]) and three work-related stressors (interpersonal conflict, workload, and perceived ambiguity) on a multi-dimensional measure of sleep quality (going to bed, falling asleep, maintaining sleep, reinitiating sleep, and waking up). Three hundred and forty-seven female and 120 male undergraduates participated in the study. Our results indicated that (a) individuals high in NA tended to report lower quality sleep than individuals low in NA; (b) individuals high in PA tended to report higher levels of sleep quality than individuals low in PA; (c) sleep quality tended to relate negatively with interpersonal conflict, work demands, and job ambiguity; and (d) NA moderated the relationships between interpersonal conflict and sleep quality and between perceived ambiguity and sleep quality. Our findings are the first to show that personality and work-related stress influences different aspects of sleep quality. In addition, our findings are partially supportive of the hyper-responsivity role of negative affectivity which suggests that NA operates to amplify individuals' perceptions of and reactions to negative environmental events. However, our results suggest that the hyper-responsivity model might be more complex than previously indicated. (c) 2006 Elsevier Ltd. All rights reserved.
Personality and Individual Differences
Fortunato, V. J.,
Harsh, J. R.
(2006). Stress and Sleep Quality: The Moderating Role of Negative Affectivity. Personality and Individual Differences, 41(5), 825-836.
Available at: http://aquila.usm.edu/fac_pubs/2208