Trajectories of Personality Preceding Dementia Diagnosis: A Coordinated Analysis
Date
2015-08-24
Authors
Yoneda, Tomiko
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Background: Several retrospective studies using informant report have shown that individuals with dementia demonstrate considerable personality change. Two prospective studies, also using informant report, have shown that individuals who develop dementia show some personality changes prior to diagnosis (Balsis et al, 2005; Smith-Gamble et al 2001). The current study is the first to examine trajectories of personality traits using self-report personality assessment prior to dementia diagnosis.
Methods: This study used data from individuals diagnosed with dementia during the course of two longitudinal studies of older adults (Total N = 254). Latent growth curve modelling was used to examine rates of change in each personality trait preceding dementia diagnosis.
Results: Controlling for sex, age, education, the interaction between age and education, and depressive symptoms, growth curve analyses revealed a linear increase in self-reported neuroticism for both datasets. Individuals who converted to dementia showed a significant increase in neuroticism preceding diagnosis of dementia.
Conclusions: Personality change, specifically an increase in neuroticism, may be an early indicator of dementia. Identification of a consistent longitudinal pattern of personality change may facilitate development of screening assessments, and aid in early care strategies and planning.
Description
Keywords
personality change, dementia, longitudinal, older adults, neuroticism, extraversion, with-in person change