People who heard unusual phrases prior to sleep were awakened each time they began REM sleep. The fact that they remembered less the next morning provides support for the ________ theory of dreaming.

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The fact that people who were awakened during REM sleep after hearing unusual phrases remembered less the next morning suggests that their brains were processing less information during dreams. This supports the idea of the information-processing theory, which posits that dreams help consolidate and process information from the day. The manifest content theory (A) is concerned with the symbols and images that appear in dreams, the physiological theory (B) suggests that dreams are a result of random neural activity, and the cognitive development theory (D) is focused on how dreams reflect cognitive development during childhood.

People Who Heard Unusual Phrases Prior to Sleep Were Awakened