Evaluation of apathy among institutionalized older persons: Its mediating role between cognitive functioning and lack of awareness

Objectives: The main objective of this study was to determine the directions of the relationships between apathy, cognitive deficits and lack of awareness.Methods: One hundred and twenty-one older persons living in nursing homes, aged between 65 and 99 years old, participated in the study. Cognitive functioning, autonomy, depressive and anxious symptoms, general self-efficacy, self-esteem and apathy were evaluated through tests and questionnaires. Lack of awareness was calculated using the patient-caregiver discrepancy method. The sample was divided into two groups (n1 = 60, n2 = 61) depending on cognitive functioning level (Dementia Rating Scale < median score: 120). We first explored the characteristics of each group. Then, we compared the mode of evaluation of apathy. Finally, we investigated the direction of relationships by applying mediation analyses.Results: Older persons in the low cognitive functioning group were less autonomous, had a lower cognitive functioning level, higher caregiver-rated apathy and higher lack of awareness than the high cognitive functioning group (ps < 0.05). Evaluation differences were found only in the low cognition group. Caregiver-rated apathy totally mediated the relationship between cognitive functioning (predictor) and lack of awareness (dependent variable) for the whole sample (90%) and for the low cognitive functioning group (100%).Conclusions: Cognitive deficits should be taken into account when evaluating apathy. Interventions should combine cognition training and emotion intervention to reduce lack of awareness. Future research should develop a therapy dedicated to apathy among older persons without pathologies.