Research Using the High Amplitude Sucking, and Head Turning Techniques

Multiple Choice

Research using the high amplitude sucking, and head turning techniques have suggested that:

A) infants can discriminate between two sounds.
B) infants can discriminate sound contrasts that are common to their own language, but not those that are used only in other languages.
C) infants are not able to discriminate between speech sounds until approximately six months.
D) speech sound discrimination is fully developed before children learn to talk.