There is evidence that all of the following may be reasons that mothers use infant-directed speech except
a. Infants show a preference for infant-directed speech.
b. Infants can tell the difference between words more easily when they are spoken in infant-directed speech.
c. Mothers try to regulate the emotional responses of their babies with infant-directed speech.
d. Mothers learn that this skill sill helps infants acquire language.
D
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A skeptic of psi abilities is one who
a. shows uncritical acceptance of psi events. b. is unconvinced regarding the existence of psi events. c. is against the continuation of parapsychology research. d. rarely experiences the "decline effect."
Research in everyday memory issues is usually higher in _______ and lower in _______ than typical laboratory memory research
a) ecological validity; internal validity b) internal validity; ecological validity c) internal validity; external validity d) ecological validity; external validity