Which is the first of Piaget's stages of cognitive development-the one characteristic of infants?

A) the preoperational stage
B) the sensorimotor stage
C) the formal-operations stage
D) the concrete-operations stage

Sensorimotor Stage

The first developmental stage in Piaget's theory, from birth to about age 2, when infants learn about the world through their sensory impressions and motor activities.

Preoperational Stage

In Piaget's theory of cognitive development, the stage (from approximately 2 to 7 years old) when a child begins to engage in symbolic play and learns to manipulate symbols but does not yet understand concrete logic.

Cognitive Development

The study of how thinking, problem solving, and intelligence change as individuals grow from infancy through adulthood.