For children in the single-word stage of language development, single words __________.

For children in the single-word stage of language development, single words __________.
 
  a. often lack prosody
  b. are often over-expanded
  c. are different from the ones that adults use
  d. can convey complex ideas

Question 2

Categorical phoneme perception emerges during which stage of language development?
 
  a. single word
  b. babbling
  c. conversational
  d. auditory

Question 3

The babbling stage of language development is useful for __________.
 
  a. practicing making language sounds
  b. learning a second language
  c. cross-validation
  d. nonparametric correlations