Which of the following statements is supported by research on babbling and deaf infants?
A) Deaf infants not exposed to sign language will stop babbling entirely.
B) Deaf infants do not babble or coo unless they are exposed to sign language.
C) Deaf infants start babbling much earlier than hearing infants.
D) Deaf infants start babbling much later than hearing infants.
Answer: A
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If an observer monkey sees another monkey react with fear in the presence of a snake, will the observer become afraid of snakes also? a. No
b. Yes, but only if it sees the snake. c. Yes, but only if it has the gene for "fear of snakes.". d. Yes, under all circumstances.
Which of the following is TRUE regarding the adolescent growth spurt?
a. Boys grow more during their spurt than do girls. b. Girls grow more during their spurt than do boys. c. Growth depends upon degree of physical activity. d. Both boys and girls add an average of 13 inches to their height.
A control group always gets a treatment known as a
A) sample B) random sample C) dependent variable D) placebo
Vasocongestion is to ______ as myotonia is to ______.
a. muscle tension; blood flow b. blood flow; muscle tension c. coughing; blurred vision d. blurred vision; coughing