Which statement about sleep and performance is most accurate?

Which statement about sleep and performance is most accurate?

• A. Adequate sleep improves mood only
• B. Adequate sleep improves attention, memory, decision-making, and mood
• C. Sleep has no effect on cognitive performance
• D. Sleep deprivation is beneficial for learning

Answer: (B)

Sleep supports multiple cognitive processes and mood, not just mood. When well rested, attention stays sharp, memory processes—especially encoding and consolidation—work more effectively, decision-making and other executive functions improve, and mood is better regulated. These changes happen because sleep helps the brain organize information, restore neurotransmitter balance, and allow the prefrontal cortex and hippocampus to function optimally. That’s why the statement that adequate sleep improves attention, memory, decision-making, and mood is the most accurate. Sleep deprivation, on the other hand, tends to slow processing, increase lapses in attention, impair memory formation and retrieval, weaken judgment and problem solving, and worsen mood. The other options are incomplete or incorrect because they either limit sleep’s effects to mood, claim no effect at all, or erroneously suggest that skipping sleep aids learning.

Sleep supports multiple cognitive processes and mood, not just mood. When well rested, attention stays sharp, memory processes—especially encoding and consolidation—work more effectively, decision-making and other executive functions improve, and mood is better regulated. These changes happen because sleep helps the brain organize information, restore neurotransmitter balance, and allow the prefrontal cortex and hippocampus to function optimally.

That’s why the statement that adequate sleep improves attention, memory, decision-making, and mood is the most accurate. Sleep deprivation, on the other hand, tends to slow processing, increase lapses in attention, impair memory formation and retrieval, weaken judgment and problem solving, and worsen mood. The other options are incomplete or incorrect because they either limit sleep’s effects to mood, claim no effect at all, or erroneously suggest that skipping sleep aids learning.