The field of _______ focuses on the questions of how people of different ages differ from one another and what caused those differences.

A) personality
B) comparative psychology
C) developmental psychology
D) geriatrics

Developmental Psychology

The scientific study of how and why human beings change over the course of their life, from infancy through old age, including cognitive, emotional, and social changes.

Comparative Psychology

Area of psychology in which the psychologists study animals and their behavior for the purpose of comparing and contrasting it to human behavior.

Geriatrics

The branch of medicine or social science dealing with the health and care of older adults.