Why is voluntary reaching and grasping not present at birth?
a. Because it requires visual-motor coordination
b. Infants can do voluntary reaching and grasping at birth.
c. Because they cannot see the objects
d. Infants do not find the environment interesting enough to motivate the actions.
A
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When Ann went to her doctor, he gave her a hearing test. He presented her tones through earphones. The tones started at a low intensity and then became louder. The doctor asked Ann to raise her hand whenever she started to hear a sound. Ann's _______ was being tested.
a. auditory convergence b. absolute threshold c. refractory threshold d. difference threshold
Treatment trends by age show us that
a. older people are more likely to seek treatment. b. younger people are more likely to seek treatment. c. no clear distinction exists. d. middle-aged people hardly ever seek treatment.