Longitudinal Changes in Psychological Well-Being of Middle-Aged Individuals in the United States: A Growth Curve Model

This study modeled the relationship between psychological well-being and interpersonal strain among middle-aged Americans using latent growth curve models. We found that interpersonal strain and overall PWB decreased over time. However, two PWB sub-domains, environment mastery and positive relations with others, increased over time while the other four sub-domains decreased.