Even young children are able to classify objects or events that share common characteristics into the same class, such as brown dogs, but they run into problems when they have to __________
a. arrange them in logical order
b. complete a mental operation to complete the classification
c. focus on reversibility
d. focus on parallelism
Answer: B
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Dolphins are able to sleep without drowning because they
a. have gills, like fish do. b. have a special opening that allows air in but not water. c. sleep on just one side of their brain at a time. d. inflate their bodies before sleep, which maintains them floating upright so they can breathe without taking in any water.
Regarding castration in sexually experienced adults, which of the following statements is FALSE?
a. Castration includes the procedures known as the vasectomy and the tubal ligation. b. At first after castration, some people experience a loss of sex drive; while with others there is no change. c. Several years after castration, almost all subjects report a decrease in sex drive unless they take hormone supplements. d. Castration of sex offenders is not likely to curb their behavior.