Illness Attitudes Associated with Seasonal Depressive Symptoms: An Examination Using a Newly Developed Implicit...

Area of Science:

• Psychiatry
• Clinical Psychology
• Cognitive Neuroscience

Background:

• The Dual Vulnerability Model suggests seasonal depression involves physiological vulnerability and negative appraisal of vegetative symptoms.
• Rumination may exacerbate negative attitudes towards these vegetative changes.
• Previous research has not examined implicit attitudes towards vegetative symptoms in seasonal depression.

Purpose of the Study:

• To test if illness attitudes toward fatigue moderate the link between vegetative and cognitive symptoms in seasonal depression.
• To investigate the association between illness attitudes and rumination.
• To develop and utilize an implicit method for assessing fatigue appraisal as indicative of illness.

Main Methods:

• Cross-sectional study design.
• Utilized a novel implicit method to assess attitudes toward fatigue.
• Statistical moderation and association analyses were performed.

Main Results:

• Illness attitudes toward fatigue significantly moderated the relationship between vegetative symptom severity and cognitive symptom severity.
• A positive association was found between ruminative response style and implicit illness attitudes toward fatigue.
• The developed implicit method successfully assessed the appraisal of fatigue as illness.

Conclusions:

• Negative appraisals of vegetative symptoms play a crucial role in the development of cognitive and mood symptoms of seasonal depression.
• Illness attitudes and rumination are important factors to consider in understanding and treating seasonal affective disorder.
• The findings support and extend the Dual Vulnerability Model of seasonal depression.