At least four-in-ten U.S. adults (41%) have experienced high levels of psychological distress at least once since the early stages of the coronavirus outbreak, according to a new Pew Research Center analysis that examines survey responses from the same Americans over time. Experiences of high psychological distress are especially widespread among young adults. A 58% majority of those ages 18 to 29 have experienced high levels of psychological distress at least once across four Center surveys conducted between March 2020 and September 2022.