When a research team selected participants for a study of mother-infant play, they chose a socioeconomically and racially/ethnically diverse sample. By doing this, the researchers will increase their study's
a. viability
b. reliability
c. internal validity
d. external validity
D
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Which of the following is a characteristic of polygraphs, or lie detectors?
A) Drugs and pain can increase their accuracy. B) Tense muscles will reduce their accuracy. C) They are always admitted in courts as evidence. D) They monitor parasympathetic arousal.
For punishment to be effective with children,
a. they must be punished on an intermittent schedule. b. one parent must be the punisher and the other the reinforcer. c. parents should be very clear about what they regard as misbehavior. d. it is important that the punishment not be too predictable, that is, if you gave three warnings last time, give only one warning this time.
Which of the following conclusions is the most logical to draw from the fact that mice and songbirds have versions of the FOXP2 gene that is very similar to the form found in humans?
A) Mice and songbirds can use language to communicate. B) The FOXP2 gene did not develop specifically as a result of language development during human evolution. C) The FOXP2 gene is not involved in language. D) The FOXP2 gene is solely responsible for the ability of humans to communicate.
These last from 2 to 3 seconds and occur frequently in people who try to stay awake for long periods of time
a) nods b) microsleeps c) mini-naps d) sleep fantasies.