- Title
- Insomnia, dsyfunctional beliefs about sleep, hopelessness and depression among older adults: The development and testing of a path model
- Creator
- Sadler, Paul
- Date
- 2011
- Type
- Text; Thesis
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/58289
- Identifier
- vital:4610
- Abstract
- Masters of Applied Science (Psychology); Insomnia increases the risk of developing depression among older adults. No study, however, has attempted to explain how insomnia predicts depression from a cognitive perspective. The primary aim of the current study was to test a path model that explored whether dysfunctional beliefs about sleep and hopelessness explain how insomnia influences depression among older adults. It was hypothesised that insomnia would predict depression, both directly and indirectly, via dysfunctional beliefs about sleep and hopelessness. A second exploratory aim tested whether the model differed according to whether or not participants were likely to have a physiological sleep disorder. A community sample of 218 older adults aged from 65 to 96 years, completed the Insomnia Severity Index, Dysfunctional Beliefs and Attitudes About Sleep 10-Item Scale, Beck Hopelessness Scale, Snoring Tiredness Observed Pressure Scale, and Restless Legs Syndrome Questionnaire. Out of the 218 participants, 171 completed the Centre for Epidemiologic Studies Depression Scale three months later. The model was tested using a longitudinal path analysis design. Initial results indicated that the overall model fit was poor. One modification that involved the addition of a direct path from insomnia to hopelessness resulted in an excellent model fit. Results further demonstrated that the revised path model was non-invariant between older adults who were likely to have a physiological sleep disorder and older adults who were unlikely to have a physiological sleep disorder. It was concluded that dysfunctional beliefs about sleep and hopelessness partly explain how insomnia influences depression among older adults, irrespective of the likelihood of having a physiological sleep disorder.
- Rights
- Open Access
- Rights
- This metadata is freely available under a CCO license
- Subject
- Older people; Sleep disorders in older age; Depression in older age
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