When Pavlov placed meat powder or other food in the mouths of canine subjects, they began to salivate. The salivation was a(n) __________

Kuhl and colleagues studied infants' discrimination of vowel sounds in English and

Swedish and found that infants learned not to pay attention to slight differences in the sounds in their own language. This occurred as early as the age of __________ month(s). a. 1 b. 3 c. 6 d. 9 e. 12

According to Freud, infants given too much oral gratification are most likely to become ______

a. pessimistic and hostile b. optimistic and dependent on others c. messy and destructive d. stingy and excessively orderly