stability) are required for adult occupational roles. Therefore, individuals who already possess this constellation of traits might display greater stability at a younger age. In contrast, Terracciano, McCrae, and Costa (2010) found evidence that the plateau of stability at age 30 was unrelated to earlier personality maturity. The authors argued that such insensitivity to normative maturity is strong evidence that intrinsic mechanisms are guiding personality development rather than social pushes.
