Emma Rhodes, Dawn Mechanic-Hamilton, Jeffrey S Phillips, Alejandra Bahena, Nykko Vitali, Quinn Hlava, Philip Cook, James Gee, Murray Grossman, Corey McMillan, Lauren Massimo
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引用次数: 0
Abstract
Objective: Personality 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.
Method: Sixty-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.
Results: Higher 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).
Conclusions: Informant 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.
期刊介绍：
The journal publishes original contributions dealing with psychological aspects of the etiology, diagnosis, and treatment of disorders arising out of dysfunction of the central nervous system. Archives of Clinical Neuropsychology will also consider manuscripts involving the established principles of the profession of neuropsychology: (a) delivery and evaluation of services, (b) ethical and legal issues, and (c) approaches to education and training. Preference will be given to empirical reports and key reviews. Brief research reports, case studies, and commentaries on published articles (not exceeding two printed pages) will also be considered. At the discretion of the editor, rebuttals to commentaries may be invited. Occasional papers of a theoretical nature will be considered.
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