Author Question: The fact that coos sound the same regardless of whether the young infant can hear suggests that they ... (Read 98 times)

storky111 · **on:** Jun 22, 2018

The fact that coos sound the same regardless of whether the young infant can hear suggests that they

a. convey self-generated meanings for adult listeners.
b. develop with maturation of the brain and vocal organs.
c. are a reflection of the parents' recasts and extensions.
d. arise from the infant's mutual exclusivity constraint.

Question 2

The confidentiality principle of research ethics requires that this information be kept secret:

a. the researchers' hypotheses.
b. subjects' names and individual results.
c. insurance policies held by the laboratory.
d. results of unnamed groups of subjects.