There is little research on personality disorder (PD) onset in older age. Many studies have shown that normative personality traits change across the life span, even into later life. This study aimed to investigate the onset of PDs in later adulthood (>age 55), and the possible influence of major life events on predicting this late onset. The current analysis was conducted with data from the St. Louis Personality and Aging Network (SPAN). Structured diagnostic interviews were administered three times over five years. Logistic regressions were conducted predicting late onset PD from baseline to FU5 and from FU5 to FU10 as a function of each major life event. 75 PD onsets occurred from baseline to FU5, and 39 PD onsets occurred from FU5 to FU10. Personal illness predicted the onset of PDs from FU5 to FU10.
Keywords: late onset; major life events; older adulthood; personality change; personality disorders.