Psych & Soc Quiz
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FOUNDATIONAL CONCEPT 6: PERCEPTION, COGNITION, EMOTION
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A lab study evaluated how partial sleep restriction affects learning across nights. Thirty students were assigned to either 4 hours/night in bed for 5 nights (restricted) or 8 hours/night (normal). Each morning they learned a list of paired associates and were tested 24 hours later. The restricted group showed similar immediate learning but poorer delayed recall, especially for pairs learned on Nights 3–5. Participants in the restricted group also reported increasing sleepiness across the week. Which of the following best explains the changes observed in the study?
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