Theorist ravenna helson focused on which suggest that it is the particular events in an adult's life, rather than age per se, that determine the course of personality development.

Life events model.

Explanation:

Theorist Ravenna Helson focused on life events model, which suggest that it is the particular events in an adult's life, rather than age per se, that determines the course of personality development. This is a newer model than fixed stages, because it takes into account life events to determine personality development. Two women can be of different ages but can be the same developmentally speaking if their only child starts kindergarten.