Siegle, G. J., Steinhauer, S. R., Carter, C. S., & Thase, M. E. 'Convergence and Divergence in Rumination Measures'
Presentation to the Association for the Advancement of Behavior Therapy, New Orleans, November 18, 2000
Abstract
Rumination has been associated with increased vulnerability to, maintenance of, and delays in recovery from depression. Yet, different researchers define rumination differently. A number of experiments were conducted to examine the extent to which these definitions represent a single construct and thus, the extent to which they are associated with aspects of depression. First, seven rumination scales were administered to 189 undergraduates. Generalizability analysis suggested that the scales were not responded to consistently by participants, though each scale had adequate internal consistency. Follow-up examinations suggested that while the scales overlap to some extent they measure different dimensions of rumination. The second study involved giving the same measures to depressed and never-depressed individuals during information processing tasks designed to provoke sustained processing of emotional information. Reaction times, pupil dilation (a correlate of cognitive load) and functional magnetic resonance imaging (fMRI) were used to assess sustained brain activity during the tasks. Scores on many of the administered rumination scales were highly correlated with reaction time biases, sustained pupil dilation to negative information, and sustained amygdala activation. Results suggest that while measures of rumination may tap different phenomena, they have similar physiological correlates.
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