Baillargeon's studies on babies' understanding found that
A. vision is particularly important in the development of joint attention.
B. infants in the sensorimotor period are unaware of causality.
C. object permanence occurs in infants as young as 3½ months.
D. the more time a baby spends looking at something, the more the baby must like it.
Answer: C
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Which of the following behaviors is characteristic of infants in Piaget's sensorimotor Substage 2?
A) a baby who drops toys down the steps in varying ways B) a baby who accidentally makes a smacking noise while eating and later tries to reproduce the sound C) a baby who can push aside a cover to retrieve a hidden toy D) a baby who accidentally hits a toy hung in front of her and then tries to repeat this effect
Ethan compiled geographic information systems data and created a map showing that in low-income areas of a city, stores selling healthy food were scarce, while in higher-income areas, they were common. This is an example of what method?
a. qualitative interviewing. b. experimental social innovation. c. quantitative description. d. multiple baseline studies.