Kuhl's research involving exposing infants from English-speaking homes to stories read in Mandarin found that _____.
A) having the reader present with the infant was effective in teaching the infants to discriminate among Mandarin sounds, but a DVD of the same reader reading the same stories was not
B) having the reader present with the infant was not effective in teaching the infants to discriminate among Mandarin sounds, but a DVD of the same reader reading the same stories was very effective
C) having the reader present with the infant was effective in teaching the infants to discriminate among Mandarin sounds, as was a DVD of the same reader reading the same stories
D) having the reader present with the infant was effective in teaching the infants to discriminate among Mandarin sounds, as was a DVD of the same reader reading the same stories, but only when the infants were at least 18 months old
Question 2
Which of the following is a type of nonprobability sampling?
a. Stratified sampling
b. Snowball sampling
c. Cluster sampling
d. Simple random sampling