Which of the following could be effects of two to three days of sleep deprivation?

• A. Improved reaction time and alertness
• B. Impaired cognitive performance and difficulty concentrating
• C. Enhanced immune system function
• D. Significant increase in muscle mass

Answer: (B)

Verified step by step guidance

1. Step 1: Understand the effects of sleep deprivation by reviewing psychological and physiological research on how lack of sleep impacts the brain and body.
2. Step 2: Recognize that sleep deprivation typically impairs cognitive functions such as attention, memory, and reaction time, rather than improving them.
3. Step 3: Identify that sleep deprivation can lead to difficulty concentrating and reduced cognitive performance, which aligns with the correct answer.
4. Step 4: Note that enhanced immune system function and significant muscle mass increase are not commonly associated with short-term sleep deprivation; in fact, sleep loss often weakens immune response and hinders muscle recovery.
5. Step 5: Conclude that the most accurate effect of two to three days of sleep deprivation is impaired cognitive performance and difficulty concentrating.