Sleep and Cognitive Performance

Q1. What does the passage mean by the 'adaptation illusion'?

1. The tendency of sleep-deprived individuals to adapt their work schedules to reduce fatigue
2. The false sense that one has adapted to reduced sleep, even as cognitive deficits accumulate
3. The biological adaptation that occurs when a person consistently sleeps fewer than six hours
4. The illusion of productivity that short sleepers create through stimulants like caffeine

Q2. According to the passage, the glymphatic system is active during sleep to:

1. Consolidate memories from the day's experiences
2. Clear metabolic waste from the brain
3. Regulate the release of growth hormones
4. Repair cellular damage from ultraviolet radiation

Q3. The passage argues that the adaptation illusion is 'particularly dangerous in high-stakes professions.' The reason given is that:

1. High-stakes professions require more sleep than ordinary jobs
2. Self-assessment is routinely used as a measure of fitness for duty in these professions
3. Professionals in these fields are less likely to seek medical help for sleep disorders
4. These professions have the longest working hours and therefore the most sleep deprivation

Q4. Which of the following statements would most weaken the passage's argument about sleep deprivation and cognitive performance?

1. A study showing that people who regularly sleep 6 hours report feeling well-rested and productive
2. Research demonstrating that objective tests of cognitive performance show no decline in individuals sleeping 6 hours versus 8 hours
3. A survey showing that most professionals in aviation voluntarily sleep 8 or more hours
4. Evidence that caffeine can fully restore alertness lost to one night of poor sleep

Q5. The passage's critique of the 'Silicon Valley work ethic' of sleeping four to five hours is that:

1. This work ethic is only sustainable for young people who can recover from sleep deprivation more easily
2. It treats sleep as a residual activity, ignoring the scientific evidence that sleep is an active and essential biological process
3. It was never actually practised by Silicon Valley executives, who privately slept adequate hours
4. It is economically inefficient because sleep-deprived workers make more costly errors

Q6. Which of the following best describes the main purpose of this passage?

1. To argue for regulatory limits on working hours in high-stakes professions
2. To correct the misconception that sleep is merely the absence of wakefulness, and to establish its importance for health and cognition
3. To compare the sleep practices of different cultures and their effects on productivity
4. To review the pharmacological interventions available for chronic sleep deprivation