Year: 2023
Type: dissertation
Study design: Observational Study
Abstract: How does personality develop with age? Although this question has attracted considerable interest in research, uncertainty remains about the exact development of personality with age. The present dissertation unites two articles that address heterogeneous findings regarding the influence of age on different concepts of stability and change in the Big Five personality traits. Article 1 examines stability and change in the rank order across age, which relates to the consistency of interindividual differences over time. This article supports a developmental pattern of rank-order stability in personality resembling an inverted U-shape and provides evidence for health-related processes to account for the decline in stability in older age. Article 2 investigates the influence of age on stability and change in the mean levels of personality, that is, the average developmental trajectories. This publication found, for young adulthood, mean-level changes of personality to be in accordance with development toward greater psychological maturity, but it also showed that single items can change differently with age, even when they pertain to the same personality dimension. Beyond, Article 1 and Article 2 highlight how methodological aspects affect the developmental trajectories, thereby providing an account for inconsistent previous findings regarding the influence of age on stability and change in personality.:General Introduction 2 Concepts of Personality Development 2 Outline of Article 1: The Development of the Rank-Order Stability of the Big Five Across the Life Span 5 Outline of Article 2: Using Within-Person Change in Three Large Panel Studies to Estimate Personality Age Trajectories 8 References 12 Article 1: The Development of the Rank-Order Stability of the Big Five Across the Life Span 19 Article 2: Using Within-Person Change in Three Large Panel Studies to Estimate Personality Age Trajectories 89 Appendix 177
Author: Seifert, Ingo Sven
Institution: Leipzig University
Language: English
Subfield: Clinical Psychology
Field: Psychology
Domain: Social Sciences
Open Access status: green
OpenAlex ID: W7048246791