2011; Roberts & DelVecchio, 2000) have been put forward. Each of these periods marks important social and biological transitions that may display different patterns of personality development. Although not often broken down specifically in this way, the FFT would be likely to view age 30 as an important turning point and the others to be relatively inconsequential. Conversely, SPMs would be more likely to endorse each turning point as important due to the shifts in environmental experiences.
