Posted: December 21st, 2017
– A 29-month-old boy plays with a ball, which rolls under a couch. The boy
promptly crawls under the couch to retrieve the ball. According to Piaget’s
theories of cognitive development, this behavior is characteristic of a
thinking process called:
a. Object permanence
b. Basic trust
c. Object constancy
d. Sensory-motor stage
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