English Base

Test 011

Reading Practice: Sleep and Memory

Reading Text

The note in the laboratory journal was unusually short: fourteen students, a list of forty ordinary nouns, one night in the building's quiet room. The procedure had been borrowed from an older study, and little had been expected of it. The morning scores, however, surprised everyone. Those who had slept between learning and testing recalled, on average, nine words more than those who had been kept awake. The difference was too large to be dismissed as chance.

Such results have been repeated often enough to support a general argument: sleep does not merely rest the body, it reorganises what has been learned. The evidence suggests that the sleeping brain replays the day's patterns, strengthening some connections and weakening others. Stored in this way, a memory becomes gradually less dependent on the circumstances in which it was formed. This process, known as consolidation, is now regarded as one of sleep's central functions rather than an accidental side effect.

Not all hours of sleep contribute equally. In experiments where brain activity has been monitored throughout the night, the deepest slow-wave sleep has been linked to the retention of facts and word lists, while the lighter stages rich in rapid eye movements seem to favour skills and emotionally coloured material. Had the researchers relied on total sleep duration alone, this division of labour would have remained invisible. Timing matters as much as length.

A related tendency appears in daytime study. Groups allowed a short break, or a walk in the park between two learning sessions, consistently outperform those who work without pause, even when total study time is identical. The explanation offered by most researchers is not that walking is magical but that a period of low demand allows the same replay to occur while the person is awake. Sitting still with a phone, by contrast, offers no such interval.

None of this makes sleep a substitute for attention. Material that has never been properly understood cannot be consolidated, and no amount of rest will rescue a list read once without interest. Nor should the findings be treated as a reliable recipe: the studies involve modest samples, and the effect, though consistent, varies between individuals.

If a test matters, the arrangement of the hours before it matters too: learn in focused stretches, stop before exhaustion, take the walk, and let the night do the work that cannot be done deliberately. Such an approach is unlikely to produce dramatic improvements, but it is reliable, and it costs nothing except patience.

Comprehension Test

Question 1. Why does the author describe the journal entry as "unusually short"?

✗ IncorrectThe brevity reflects a simple design with few details to record, not sloppy bookkeeping; nothing in the passage suggests carelessness.

✓ CorrectThe plain entry — fourteen students, forty nouns, one night — stands in deliberate contrast with the outcome: "the morning scores, however, surprised everyone".

✗ IncorrectThe author mentions the entry neutrally, as the starting point of a finding, and offers no criticism of how journals are written.

✗ IncorrectThe experiment was clearly completed, since the text reports scores collected the following morning and a comparison between two groups.

Question 2. What was the main outcome of the experiment described at the beginning?

✗ IncorrectThe advantage belonged to the sleepers: those kept awake recalled on average nine words fewer, not more than expected.

✗ IncorrectThe text states the opposite: a gap of about nine words separated the two groups, too large to be explained by chance.

✗ IncorrectDifficulty is never discussed; the list is described simply as "forty ordinary nouns", and the focus is on the difference between groups.

✓ Correct"Those who had slept between learning and testing recalled, on average, nine words more than those who had been kept awake."

Question 3. What is the author's main argument in the second paragraph?

✓ CorrectThe paragraph opens with exactly this claim — sleep "does not merely rest the body, it reorganises what has been learned" — and then supports it with the idea of replay and consolidation.

✗ IncorrectThe author explicitly rejects this narrow view with the phrase "not merely rest the body", placing the emphasis on mental reorganisation instead.

✗ IncorrectThe text describes an automatic process happening during sleep, not deliberate rehearsal; consolidation is presented as something the sleeping brain does by itself.

✗ IncorrectThis contradicts the paragraph, which says the sleeping brain "replays the day's patterns" and strengthens connections.

Question 4. What does "less dependent on the circumstances in which it was formed" mean in the second paragraph?

✗ IncorrectBecoming less dependent means the opposite of vanishing: the memory holds up even when the surroundings differ from those of learning.

✗ IncorrectThat would be full dependence on circumstances; the text claims the reverse, that the memory gradually needs those circumstances less.

✓ Correct"Stored in this way" makes a memory "less dependent on the circumstances", that is, it no longer requires the original setting to be retrieved.

✗ IncorrectWeakening is mentioned only for certain connections inside the brain, not for the stored memory itself, which is being strengthened.

Question 5. What difference between sleep stages does the third paragraph describe?

✗ IncorrectThe pairing is reversed: the deepest slow-wave sleep is linked to facts and word lists, and the lighter stages to skills and emotional material.

✓ CorrectThe text links "the deepest slow-wave sleep" to "the retention of facts and word lists" and the lighter rapid-eye-movement stages to skills and emotionally coloured material.

✗ IncorrectThe whole point of the paragraph is a "division of labour" between the stages, so they cannot be doing identical work.

✗ IncorrectThe final sentence states that "timing matters as much as length", which directly contradicts the claim that only duration counts.

Question 6. What does the sentence "Had the researchers relied on total sleep duration alone, this division of labour would have remained invisible" suggest?

✗ IncorrectThe sentence says the opposite: relying on duration alone would have hidden the finding, so duration by itself is insufficient.

✗ Incorrect"Would have remained invisible" means the opposite — the pattern only became clear because brain activity was monitored through the night.

✗ IncorrectNothing says duration was never measured; the sentence is a hypothetical about what would have happened if it had been the only measure used.

✓ CorrectThe conditional with inversion ("Had the researchers relied...") shows that a focus on quantity alone would have concealed the division of labour between sleep stages.

Question 7. Why does the author mention "a walk in the park" in the fourth paragraph?

✓ CorrectThe walk illustrates the "period of low demand" which, according to the researchers quoted, lets "the same replay" happen while the person is awake.

✗ IncorrectThe author explicitly denies that walking is magical ("not that walking is magical"); it is offered as a break, not as a substitute for sleep.

✗ IncorrectLocation is not the variable being tested; the contrast is between a pause and no pause, not between outdoors and indoors.

✗ IncorrectFitness is never mentioned; the benefit is attributed to a pause in mental demand, not to the body's condition.

Question 8. According to the text, why do short breaks help learning?

✗ IncorrectThe amount of material stays the same; the text stresses that total study time is identical, so nothing is cut from the task.

✗ IncorrectProcessing continues during the break: the point is that replay "occurs while the person is awake", so the brain is still working on the material.

✓ CorrectThe text explains the effect by saying that "a period of low demand allows the same replay to occur while the person is awake".

✗ IncorrectEasiness is not the mechanism offered; the groups had the same total study time, so shortened sessions cannot explain the advantage.

Question 9. What is the author's attitude towards using sleep as a study technique?

✗ IncorrectThe author accepts the general finding and only limits its application, so the attitude is far from rejection.

✓ CorrectThe author calls the effect consistent and the approach reliable, yet warns that sleep is no substitute for attention and that samples are modest.

✗ IncorrectEnthusiasm is qualified at every step: the author refuses to treat the findings as "a reliable recipe" and notes variation between individuals.

✗ IncorrectThe author ends with practical advice, which shows engagement rather than indifference towards the subject.

Question 10. What does "Nor should the findings be treated as a reliable recipe" imply?

✗ Incorrect"Recipe" is what is being rejected, not the evidence; the same paragraph calls the effect consistent and later calls the approach reliable.

✗ Incorrect"Recipe" is used figuratively for a guaranteed formula, not literally for cooking instructions, so this reading misses the metaphor.

✗ IncorrectRepetition is presented as a strength of the research ("repeated often enough"), not as a problem with it.

✓ CorrectThe inverted modal construction warns against treating consolidation research as a set of steps that always works, since samples are modest and the effect varies.

Question 11. Why does the author mention that the studies involve "modest samples"?

✓ CorrectSmall samples are given as a reason for caution: the author warns that the findings must not be treated as "a reliable recipe" and that the effect, "though consistent, varies between individuals".

✗ IncorrectSmall samples limit how far the results can be generalised; they do not cancel the finding, which the author still calls consistent.

✗ Incorrect"Modest" here describes the size of the samples, not the character of the scientists, and the remark is a caveat rather than praise.

✗ IncorrectForgetting is not the topic at this point; the sentence is about the methodological limitation of the research itself.

Question 12. What practical arrangement does the author recommend before a test?

✗ IncorrectThe final paragraph advises stopping "before exhaustion" and letting the night do part of the work, which rules out all-night study.

✗ IncorrectThe text explicitly says no amount of rest "will rescue a list read once without interest", so this is the opposite of the advice given.

✓ CorrectThe last paragraph lists precisely these steps: "learn in focused stretches, stop before exhaustion, take the walk, and let the night do the work".

✗ IncorrectSleep is treated as an essential part of the process, so the idea of replacing it with daytime work goes against the whole argument.
✗ IncorrectThe same sentence calls the approach "reliable", so "costs nothing" describes a low price, not a lack of value.

✗ IncorrectThe phrase makes patience the only requirement and implicitly a cheap one; it does not comment on how rare the quality is.

✗ Incorrect"Costs nothing" rules out expense of any kind; the only investment named is patience.

✓ Correct"Nothing except patience" places the entire price of the method in waiting and restraint, and the passage never mentions any financial cost.

Question 14. Which description best matches the tone of the whole text?

✗ IncorrectThe author treats the evidence with respect throughout and even ends with advice, which is incompatible with mockery.

✓ CorrectThe text weighs evidence ("the evidence suggests"), admits limits and closes with usable advice, all in a calm, expository register.

✗ IncorrectNothing in the passage raises alarm; the risk discussed is only that sleep cannot repair material never understood.

✗ IncorrectThe author reports experiments and their samples rather than private experience, so the account is impersonal.

Question 15. Which statement best expresses the conclusion the author draws?

✓ CorrectThe author insists that sleep is no "substitute for attention" and that material never properly understood "cannot be consolidated", while still recommending sleep as reliable help.

✗ IncorrectThis is explicitly denied: no amount of rest will save material that was poorly learned, so sleep cannot stand in for study.

✗ IncorrectWord lists are one tool used in the experiments, but the text also mentions skills and emotionally coloured material, so no such exclusivity is claimed.

✗ IncorrectThe text assigns distinct roles to both deep and lighter stages, so it does not reduce the value of sleep to one stage.
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