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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The dramatic increase in retinal sensitivity that occurs after entering the dark is called
a. the Ishihara effect. b. retinal disparity. c. cone enhancement. d. dark adaptation.
On the neuron, neurotransmitters are stored in
a. synaptic vesicles. b. the nodes of Ranvier. c. the myelin sheath. d. synaptic clefts.
According to Freud, which of the following is true of the unconscious mind?
a. The unconscious mind is completely inaccessible except through psychoanalysis and even then remains largely unknown. b. Some parts of the unconscious mind can be brought into the preconscious mind and thus accessed by the conscious mind. c. The unconscious mind typically does not form until late adolescence or early adulthood and then becomes stronger throughout life. d. Except when brain damage occurs, the unconscious mind has relatively little importance.
The 10-80-10 spectrum of happiness suggests which of the following?
A. About 10 percent of the time human beings can expect to be very unhappy because life will be extremely difficult. B. About 80 percent of life is spontaneously wonderful. C. People have a great deal of control over their degree of happiness at least 80 percent of the time. D. A and C