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By the Time Children Are Five Years Old

Question 47

Multiple Choice

By the time children are five years old:


A) about 50 percent of sleep time is spent in REM sleep and 50 percent is spent in quiet sleep that is very similar to NREM stages 1 and 2.
B) their sleep pattern is characterized by 60-minute sleep cycles, producing up to 13 cycles per day.
C) the typical 90-minute sleep cycles of alternating REM and NREM are established.
D) they will begin to experience their first dreams and nightmares.

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