The reward circuit in the brain involves the neurotransmitter:
A) serotonin.
B) norepinephrine.
C) acetylcholine.
D) dopamine.
Ans: D) dopamine.
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When infants "look" at something,
a. they actually bounce from feature to feature, rather than staring. b. they focus in on one feature and ignore all other features. c. they are prewired to pay attention to subtle features. d. they do not like anything out of the ordinary or different.
It is ______for parents to be closer or more supportive of one child over others
a. quite common c. relatively uncommon b. somewhat common d. quite rare
Bobby's growth is stunted and he exhibits mental retardation. More than likely he has
a. too much thyroxin. c. cretinism. b. hyperthyroidism. d. none of these.
During middle childhood, Shannon became increasingly flexible and was able to perform cartwheels and handstands. This is probably because
A) her ligaments were not yet firmly attached to bones. B) the bones of her body had shortened and narrowed. C) she was losing "baby fat" at an increasing rate. D) her bones were strengthening while her muscles were weakening.