Abstract
Aging has been a major issue for experts, policymakers, and even the general public in recent years. There is a growing body of evidence highlighting the role of personality traits in the health of older adults, but this evidence is still in its infancy. This study aimed to investigate the role of the big five personality traits in predicting the mental health among older adults. In this cross-sectional study, 150 community-residing older adults were selected and completed the Ten Item Personality Inventory, Multidimensional Scale of Perceived Social Support, Adult Hope Scale, and Short-Form Health Survey. According to the results, extraversion and openness to experience can explain 11% of the variances of hope, extraversion and conscientiousness account for 16% of the variances in perceived social support, and all the big five personality traits together predict 34% of the variances in the health-related quality of life. Given the role of personality traits in predicting the mental health of older adults, counselors and psychologists working with these people can pay attention to the personality traits of older adults in designing their psychological, educational, and research programs to achieve more desirable outcomes.