Noam Chomsky theorized that all children are capable of learning language through

A. Underextension:Underextension is using a word too narrowly (e.g., using “dog” to refer only to the family pet), not shown here.
B. Overextension:Overextension is applying a word too broadly (e.g., calling all animals “dog”); not what “We goed” illustrates.
C. Telegraphic speech:Telegraphic speech refers to short, content-word sentences (e.g., “want cookie”); Nanette’s error involves morphology, not the telegraphic style.
D. Overregularization:“We goed” is overregularization - applying regular past-tense rules (-ed) to an irregular verb (go to went).
E. Fast mapping:Fast mapping is rapid initial word learning from minimal exposure; not relevant to this morphological error.

A. He will qualify for special education services:An IQ of 60 is well below average (typically in the range associated with mild intellectual disability), and children with such low scores commonly qualify for special education supports (though eligibility also depends on adaptive functioning and school policy).
B. He is more intelligent than 60 percent of his classmates:An IQ of 60 is below average (100 is the mean), so he scores lower than the majority.
C. He is of average intelligence:Average intelligence is around an IQ of 100.
D. He is likely to have savant syndrome:Savant syndrome is rare and not implied by a low IQ score.
E. He is much older than other children who have taken the test:The IQ score reflects relative performance, not the child’s age relative to test-takers.