Which of the following is true of cognitive development?
A) As with physical development, people are at the height of their cognitive powers during late adulthood.
B) People typically retain their verbal skills and may even show improvement in vocabulary and general knowledge as they age.
C) Performance on tasks that require reasoning or problem-solving speeds, and visual-spatial skills tends to decline in early adulthood.
D) Crystallized intelligence is more susceptible to age than fluid intelligence.
Question 2
The mean length of utterance is the average number of _____ that communicators use in their sentences.
A) holophrases
B) phonemes
C) compound words
D) morphemes
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