People awakened during REM sleep report vivid dreams approximately ____________ of the time. 10%; 20%; 40%; 50%; 75%; [Review Part 1 of the tutorial] [Review Part 2 (Matching) of the tutorial]
People awakened during REM sleep report vivid dreams approximately ____________ of the time.
[Review Part 1 of the tutorial] [Review Part 2 (Matching) of the tutorial]