ArticleArchives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists2024
Discrepancies in Patient and Caregiver Ratings of Personality Change in Alzheimer's Disease and Related Dementias.
Article in Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivePersonality change in Alzheimer's disease and related dementias (ADRD) is complicated by the patient and informant factors that confound accurate reporting of personality traits. We assessed the impact of caregiver burden on informant report of Big Five personality traits (extraversion, agreeableness, conscientiousness, neuroticism, and openness) and investigated the regional cortical volumes associated with larger discrepancies in the patient and informant report of the Big Five personality traits.
methodSixty-four ADRD participants with heterogeneous neurodegenerative clinical phenotypes and their informants completed the Big Five Inventory (BFI). Caregiver burden was measured using the Zarit Burden Interview. Discrepancy scores were computed as the difference between patient and informant ratings for the BFI. Regional gray matter volumes from T1-weighted 3T MRI were normalized to intracranial volume and related to global Big Five discrepancy scores using linear regression.
resultsHigher levels of caregiver burden were associated with higher informant ratings of patient neuroticism (ß = 0.08, p = .012) and with lower informant ratings of patient agreeableness (ß = 0.11, p = .021) and conscientiousness (ß = 0.04, p = .034) independent of disease severity. Patients with greater Big Five discrepancy scores showed smaller cortical volumes in the right medial prefrontal cortex (β = -5.24, p = .045) and right superior temporal gyrus (β = -7.91, p = .028).
conclusionsInformant ratings of personality traits in ADRD can be confounded by the caregiver burden, highlighting the need for more objective measures of personality and behavior in dementia samples. Discrepancies between informant and patient ratings of personality may additionally reflect loss of insight secondary to cortical atrophy in the frontal and temporal structures.
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