Researchers who have studied children's acquisition of English ...

[jake]

Researchers who have studied children's acquisition of English grammatical morphemes have found that
 
  a. there is great individual variation across children
  b. all 14 morphemes studied are mastered in the early stages of language development
  c. order of acquisition is determined by the frequency with which each morpheme is heard
  d. most children acquire the morphemes in roughly the same order

Question 2

How might classical conditioning be used as an explanation of a child's learning of the word ball?
 
  Indicate whether the statement is true or false.

[asdfasdf]

Answer to Question 1

d

Answer to Question 2

TRUE