All of the following statements about the acquisition of grammar are correct except
a. children's early two-word utterances communicate a range of meanings, such as agent + action ("Daddy eat") and action + object ("Eat cookie")
b. the order of words in children's two-word utterances usually does not vary
c. many children go through a stage in which the combination of words in two-word utterances seems to be random, resulting in a roughly equal number of phrases like "eat cookie" and "cookie eat"
d. even before they are 2 years old, children are able to infer meaning from grammatical markers such as word order
C
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What operant conditioning concepts, in order, are illustrated by the mother and the father in this story? a) extinction; positive reinforcement b) punishment; negative reinforcement c) positive reinforcement; negative reinforcement d) negative reinforcement; positive reinforcement
What is the possible function of the Babinski reflex in infants?
a) Prepares the infant for independent locomotion b) Unknown c) Similar to primates' protection from falling d) General protection