Although adults have difficulty discriminating among many language sounds that are not present in the languages that they speak,___________ can discriminate among the sounds of all languages.
A) 10-month-old infants
B) 2-year-old infants
C) 5-year-old children
D) 9-year-old children
E) both A and B
Question 2
The study of communication in nonhuman primates suggests that the major impediment to their use of vocal language is their inability to
A) exert fine motor control over their voices.
B) distinguish various speech sounds.
C) interpret various speech sounds.
D) to assign emotion to particular sounds.
E) to act in response to sound.