When animals reared from birth in physically and socially stimulating surroundings are compared with those reared in isolation, the brains of the stimulated animals ________
A) are smaller
B) are lighter
C) show much denser synaptic connections
D) show loss of more functions
Answer: C
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Karen Allen had female students attempt to solve relatively difficult math problems. Some of the participants had their dog with them while they worked on the problems, while others had a close friend with them. The researchers measured each participant's stress-related arousal. In this study the dependent variable was:
a. the amount of stress-related arousal that the participants displayed b. the difficulty of the math problems c. the length of time it took to solve the problems that were presented d. who was present while the individual worked on the problems, their dog or a close friend
Researchers hypothesize that __________ play may help children establish a dominance hierarchy
A) rough-and-tumble B) parallel C) associative D) cooperative
If parents have a premature baby who has respiratory problems and vomits often, they should
a. have the infant sleeping with the parents. b. place the baby on its back. c. prop the baby up on a small pillow. d. ask a pediatrician for guidance regarding the sleeping position for this baby.
Although Dement's studies disproved this myth, it was once thought that people deprived of REM sleep were
a. more likely to become addicted to drugs. b. more likely to develop mental illness. c. not getting enough exercise, rest, or proper nutrition. d. characterized by all of these.