The document discusses how the environment shapes personality development and individual differences in three key ways:
First, the family environment and parenting styles significantly impact development by influencing traits like empathy and trust or different traits depending on parenting consistency.
Second, peer groups and cultural/societal norms also shape development as individuals are socialized and learn behaviors emphasized in these contexts like risk-taking, conformity, collectivism or individualism.
Third, other environmental factors like education, life experiences, media exposure, and physical surroundings further mold personality through their structured learning, impact on self-perception and resilience, portrayal of lifestyles, and contribution to stress or calmness.