As Darius is sleeping, his dog begins to bark. As a result, his brain emits several sudden sharp waveforms known as _____________
a. hypnic jerks
b. sleep spindles
c. K complexes
d. alpha wave activity
e. delta wave activity
Answer: c. K complexes
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Developmental psychologists are trying to evaluate different explanations for the effects of poor parenting on behavior problems in children. One important scientific thinking principle that the psychologists should keep in mind is to
A) rule out rival hypotheses using additional research. B) accept the most popular explanation even if it competes with other explanations. C) accept only those explanations which are unfalsifiable. D) develop their own explanation and exclude all others.
The highest correlation among IQ scores is for
a. identical twins. b. parent and child. c. non-twin siblings. d. foster parent and child. e. fraternal twins.