Researchers who have replicated Piaget's basic observations of the development of object permanence have typically done which of the following?
a. used only-small-scale studies
b. used the same procedures as Piaget did
c. used greater experimental control than Piaget did
d. studied infants with a smaller age-range than Piaget did
Question 2
Piaget believed that infants could not acquire object permanence until they could understand the concept of
a. invisible displacements. c. possible events.
b. impossible events. d. subjective contours.