Kohlberg emphasized that human behavior becomes less selfish as we mature because of our

A) social development.
B) physical development.
C) cognitive development.
D) economic development.

Kohlberg's theory of moral development is a cognitive-developmental theory which posits that individuals progress through stages of moral reasoning as they mature. According to Kohlberg, individuals move from a self-centered perspective (pre-conventional stage) to a more abstract perspective of justice (conventional stage) to a final stage characterized by considering universal ethical principles (post-conventional stage). Therefore, Kohlberg emphasized cognitive development as the reason for decreasing selfishness as we mature.