Venslovas, Lonnie (2008) Additive Effects of Extraversion and Neuroticism on the Prediction of Depression using the Job Demands-Control-Support Model. Honours thesis, University of Southern Queensland. (Unpublished)
Abstract
This thesis examined: (1) the additive effect of extraversion and neuroticism on the prediction of depression after controlling for positive affect (PA), negative affect (NA), job demands, job control, co-worker support, and supervisor support (the (JD-C-S) variables); (2) whether neuroticism and extraversion predicted PA and NA after controlling for the JD-C-S variables; and (3) whether extraversion and neuroticism predicted the JD-C-S variables. Correlations between variables were also examined. The research was conducted in the theoretical context of Karasek and Theorell’s (1990) JD-C-S model. The final sample (N = 281) comprised students from the University of Southern Queensland (USQ), people employed in the human services profession, people employed in a public service organisation, and a convenience sample drawn from friends and family. The survey included the: Job Content Questionnaire; Depression Anxiety Stress Scale; Job Related Affective Well-being Scale; 50-item International Personality Item Pool—Five-Factor Model; and Work Environment Questionnaire. Hierarchical regression analyses and standard regression analyses were conducted. The overall model accounted for approximately 50% of the variance in depression with PA and NA accounting for the majority of the variance (28%). Extraversion and neuroticism combined accounted for an additional 19.4% although extraversion did not add significantly to the variance. Neuroticism explained 5.4% of the variance in NA. Extraversion and neuroticism were correlated with PA and NA, but failed to explain variance in the presence of the JD-C-S variables. Neither extraversion nor neuroticism predicted the perception of job demands or supervisor support. Extraversion explained 5% of the variance in job control and neuroticism explained 7% of the variance in co-worker support. The results of this thesis indicate that neuroticism is an important predictor of job-related depression.
|
Statistics for this ePrint Item |
| Item Type: | Thesis (Non-Research) (Honours) |
|---|---|
| Item Status: | Live Archive |
| Additional Information: | Current UniSQ staff and students can request access to this thesis. Please email research.repository@unisq.edu.au with a subject line of SEAR thesis request and provide: Name of the thesis requested and Your name and UniSQ email address |
| Faculty/School / Institute/Centre: | Historic - Faculty of Sciences - Department of Psychology (Up to 30 Jun 2013) |
| Supervisors: | Tony Machin |
| Qualification: | Bachelor of Science (Honours) |
| Date Deposited: | 13 Nov 2025 00:55 |
| Last Modified: | 13 Nov 2025 00:55 |
| Fields of Research (2008): | 17 Psychology and Cognitive Sciences > 1799 Other Psychology and Cognitive Sciences > 179999 Psychology and Cognitive Sciences not elsewhere classified |
| Fields of Research (2020): | 52 PSYCHOLOGY > 5299 Other psychology > 529999 Other psychology not elsewhere classified |
| URI: | https://sear.unisq.edu.au/id/eprint/52840 |
Actions (login required)
 |
Archive Repository Staff Only |
