https://www.researchgate.net/profile/Brent-Roberts-2/publication/7337585_Patterns_of_Mean-Level_Change_in_Personality_Traits_Across_the_Life_Course_A_Meta-Analy

https://www.researchgate.net/profile/Brent-Roberts-2/publication/7337585_Patterns_of_Mean-Level_Change_in_Personality_Traits_Across_the_Life_Course_A_Meta-Analysis_of_Longitudinal_Studies/links/00b7d53c23b35d61aa000000/Patterns-of-Mean-Level-Change-in-Personality-Traits-Across-the-Life-Course-A-Meta-Analysis-of-Longitudinal-Studies.pdf https://www.researchgate.net/profile/Brent-Roberts-2/publica...