The differential activation hypothesis (DAH; Teasdale, 1988) proposes that individuals who are vulnerable to depression can be distinguished from non-vulnerable individuals by the degree to which negative thoughts and maladaptive cognitive processes are activated during sad mood. While retrieval of negative autobiographical memories is noted as one such process, the model does not articulate a role for deficits in recalling positive memories. Two studies were conducted to compare the autobiographical memory characteristics of never-depressed and formerly depressed individuals following a sad (...) mood induction. In Study 1, features of negative memories of never-depressed and formerly depressed individuals did not differ, either in neutral or sad mood. For positive memories, groups did not differ in neutral mood, but following a sad mood induction, formerly depressed individuals rated their positive memories as less vivid than their never-depressed counterparts. Study 2 examined positive autobiographical memory features more comprehensively and replicated the finding that in a sad mood formerly depressed individuals recalled less vivid positive memories than never-depressed controls. These findings suggest that the phenomenological features of positive memories could represent an important factor in depressive vulnerability, and, more broadly, that depression may be associated with a deficit in the processing of positive material. (shrink)

Repetitive thinking predicts and maintains depression and anxiety, yet the role of RT in the perinatal context has been under-researched. Further, the content and themes that emerge during RT in the perinatal period have been minimally investigated. We recruited an online community sample of women who had their first baby within the past 12 months. Participants completed a battery of self-report questionnaires which included four open-ended questions about the content of their RT. Responses to the latter were analyzed using an (...) inductive thematic analysis approach. Participants reported RT about a range of unexpected emotional responses to becoming a new mother, impact on their sleep and cognitive functioning, as well as the impact on their identity, sense of self, lifestyle, achievements, and ability to function. RT was commonly experienced in first-time mothers, and the themes that emerged conveyed an overall sense of discrepancy between expectations and reality, as well as adjustment to profound change. By providing insight into the content of RT in new mothers, the findings of our study have scope to inform the content of interventions that seek to prevent and treat postnatal mental health problems, particularly those which target key psychological processes such as RT. (shrink)