In this study, we describe a psychobiological model of the structure and development of
personality that accounts for dimensions of both temperament and character. Previous
research has confirmed four dimensions of temperament: novelty seeking, harm avoidance,
reward dependence, and persistence, which are independently heritable, manifest early in
life, and involve preconceptual biases in perceptual memory and habit formation. For the first
time, we describe three dimensions of character that mature in adulthood and influence�…