Which population shows greater responsiveness to environment manipulation as a means of personality change?

• A. Adults
• B. Elderly
• C. Children
• D. Infants

Answer: (C)

During development, personality is most malleable in childhood. In this stage, experiences from the family, school, and peer groups actively shape how a child learns to cope, interact, and regulate behavior. Because traits are still forming, environmental changes—like consistent routines, supportive relationships, and structured opportunities—can produce meaningful shifts in how a child behaves and relates to others.

As people grow into adulthood, core personality traits tend to stabilize and become more resistant to change from environmental tweaks alone. The elderly often show even more stability, with adjustments in behavior more likely tied to coping strategies or situational factors rather than wholesale changes in character.

Infants are in a rapid development phase, but their “personality” patterns are still emerging and highly influenced by caregiving and immediate surroundings, whereas the question targets the period where environmental manipulation can yield lasting personality changes across broader trait patterns. Therefore, children show the greatest responsiveness to environment-driven changes in personality.