Bailey is an infant boy who is sitting in his car seat. He is waving his hands around and his thumb accidentally touches his cheek. He turns his head toward his thumb and he puts his thumb into his mouth. He begins to suck on it and finds that he likes it. He quickly learns to put his thumb into his mouth and suck on it whenever he wants to. What sensorimotor substage does this illustrate?
A. Substage 2: primary circular reactions
B. Substage 3: secondary circular reactions
C. Substage 5: tertiary circular reactions
D. Substage 6: mental representations
Answer: A
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The period of experimenting with different roles that is so common during adolescence is referred to as the _____ period
a. foreclosure b. joint attention c. moratorium d. temperament
Temporal proximity between a behavior and a reinforcing event is ____________ for operant conditioning.
a. necessary and sufficient b. necessary but not sufficient c. sufficient but not necessary d. neither necessary nor sufficient
Abnormalities in the brain tissue of people with Down syndrome are similar to those observed in
a) autism. b) Parkinson's disease. c) Alzheimer's disease. d) Huntington's disease.
Amelia, a 6-week-old baby, lies peacefully in a crib sucking a pacifier. Her elder brother, who was sent to stay with their grandparents at the time of her birth, returns home. He walks toward the crib and calls out her name. She looks at him, stops sucking, and starts to cry. In this scenario, Amelia's reaction toward her brother best illustrates ________.
A. dishabituation B. deferred imitation C. operant conditioning D. categorization