The title's accounting is a bit off: "They found that openness increased modestly up to age 30 and then declined slowly in both men and women. The survey resul

The title's accounting is a bit off: "They found that openness increased modestly up to age 30 and then declined slowly in both men and women. The survey results suggest that men begin adulthood slightly more open to new experiences than women but decline in openness during their 30s at a faster rate than women." This puts 30 at the peak of openness and suggests that people may be as open to change in their 30s as in their 20s.