Providing care for a relative with dementia is considered to be a chronic stressor that has been linked to negative mental health consequences for caregivers. A theoretical model was developed and tested to assess the degree to which ambivalence and guilt feelings contribute to caregivers' depressive symptomatology. Participants included 212 dementia family caregivers. In addition to ambivalence and guilt feelings, sociodemographic characteristics, behavioural and psychological symptoms of dementia, and depressive symptomatology were assessed. Hypotheses derived from the stress and coping model were tested using path analysis. The analysed model showed an excellent fit to the data. In total, 35% of the variance in depressive symptomatology was explained by the assessed variables. Although significant correlations were obtained between frequency and appraisal of behavioural and psychological symptoms of dementia and depression, the obtained model suggests that this effect was mediated through ambivalence. In addition, ambivalence had an indirect effect on depression. The association of ambivalence with depression was explained through feelings of guilt; that is, respondents who reported ambivalent feelings were more likely to experience guilt, leading in turn to greater depressive symptomatology. The findings suggest that dementia caregivers' ambivalence and guilt feelings are relevant for understanding their depressive symptomatology. These factors should be addressed in psychological interventions with caregivers.

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Comorbid depression and anxiety is linked to worse outcomes such as increased impairment, distress, and morbidity, as well as worse treatment outcomes. Transdiagnostic variables such as cognitive fusion are considered potential factors for explaining comorbidity. The aim of this study was to analyze the differences between symptom profiles of caregivers (comorbid, depressive, anxiety, and subclinical) in terms of demographic and contextual factors, stress variables, and cognitive fusion. Individual interviews were conducted with 553 caregivers of a relative with dementia. Sociodemographic variables, stressors, cognitive fusion, and depressive and anxiety symptoms were assessed. Caregivers were grouped into four symptom profiles, comorbid (n = 303), depressed (n = 40) anxiety (n = 86), and subclinical (n = 124), based on their depressive and anxiety symptoms. The likelihood of presenting a comorbid profile relative to the subclinical profile was higher in female caregivers. In addition, higher frequency of disruptive behaviors of the care recipient was a risk factor for presenting a comorbid profile relative to the other three profiles, and higher scores in cognitive fusion were a risk factor of comorbidity relative to the other profiles (anxiety, depressive, and subclinical). The findings suggest that the likelihood of presenting comorbid symptomatology is higher for female caregivers and those reporting higher levels of cognitive fusion and higher frequency of disruptive behaviors. These characteristics may describe a vulnerable profile of dementia family caregivers.