Resolve Paradox or Discrepancy
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GRE Verbal › Resolve Paradox or Discrepancy
In a longitudinal study of sleep, researchers found that participants who reported drinking coffee in the afternoon had, on average, shorter total sleep time. Yet the same participants also scored higher on next-day attention tests than participants who avoided afternoon coffee. The study noted that coffee drinkers were more likely to report a brief nap earlier in the day and were more likely to have flexible work schedules. Which of the following, if true, best resolves the apparent discrepancy?
Participants sometimes underreport how much coffee they drink because they consider caffeine consumption unhealthy.
Participants who avoided afternoon coffee tended to drink more tea in the morning than coffee drinkers did.
Coffee can have different effects on different individuals depending on genetic factors.
Coffee drinkers’ higher attention scores were largely attributable to their ability to nap and to schedule demanding tasks at times when they felt most alert, offsetting the effects of slightly less nighttime sleep.
The attention test used in the study has been validated in multiple prior experiments.
Explanation
This question tests the ability to resolve a paradox by identifying an explanation that reconciles two seemingly contradictory facts. Paradox questions require finding a choice that accounts for both the shorter sleep time among afternoon coffee drinkers and their higher attention scores. The correct answer explains that coffee drinkers used naps and flexible schedules to offset sleep loss, improving attention despite less nighttime sleep. This accounts for the sleep reduction by allowing caffeine's disruptive effect, while adaptive behaviors explain better performance. Thus, it resolves the paradox by introducing compensating strategies that enhance alertness. In contrast, choice A addresses underreporting but fails to explain higher scores with less sleep. Similarly, choice B notes individual differences but does not reconcile the group-level sleep and attention findings.
A company shifted to a four-day workweek, expecting employee productivity to remain stable while job satisfaction improved. Six months later, employee surveys did show higher satisfaction and lower self-reported burnout. Yet the company’s total output, measured in completed client projects, fell by 10%. The company also instituted a new policy requiring additional documentation for each project to improve compliance, and it reassigned some experienced staff to train new hires. Which of the following helps explain the seeming contradiction?
Employees often prefer having a three-day weekend to having a higher salary.
The company’s managers held more meetings after the policy change to discuss the transition.
Some employees used their extra day off to pursue hobbies and personal projects.
Added documentation requirements and time spent training new hires reduced time available for project completion, lowering output despite improved morale under the four-day schedule.
The company’s clients became more demanding about project quality in recent years.
Explanation
This question tests the ability to resolve a paradox by identifying an explanation that reconciles two seemingly contradictory facts. Paradox questions require finding a choice that accounts for both the higher satisfaction from the four-day week and the decline in output. The correct answer explains that new documentation and training reduced project time, lowering output despite morale gains. This accounts for the schedule's benefits by allowing better well-being, while added tasks explain reduced productivity. Thus, it resolves the paradox by introducing confounding workload changes. In contrast, choice A addresses preferences but fails to explain falling output with satisfaction. Similarly, choice D notes personal use but does not reconcile improved morale with lower projects completed.
A study of workplace communication found that teams using an internal chat platform sent more messages per employee after the company encouraged “transparent communication.” Yet, in those same teams, the number of documented decisions recorded in project-management software declined. The study also noted that many teams began using chat threads to make quick decisions and that fewer employees updated the project-management tool unless a manager requested it. Which of the following, if true, best resolves the apparent discrepancy?
Some employees dislike project-management software because it requires learning a new interface.
Chat platforms can make it easier for employees to contact colleagues in other departments.
The company’s managers held fewer in-person meetings after adopting the chat platform.
The project-management software vendor released several updates during the period studied.
Teams shifted decision-making into chat conversations that were not consistently transferred into the formal project-management system, increasing message volume while decreasing documented decisions.
Explanation
This question tests the ability to resolve a paradox by identifying an explanation that reconciles two seemingly contradictory facts. Paradox questions require finding a choice that accounts for both the increased messages from the chat platform and the decline in documented decisions. The correct answer explains that decisions shifted to undocumented chat, boosting messages but reducing formal records. This accounts for the encouragement's effect by allowing more communication, while tool usage explains fewer documentations. Thus, it resolves the paradox by showing a medium shift. In contrast, choice A addresses connectivity but fails to explain declining decisions with more messages. Similarly, choice C notes dislikes but does not reconcile increased communication with reduced documentation.
An online retailer redesigned its website checkout flow to reduce cart abandonment. Analytics showed that the percentage of shoppers who completed checkout after reaching the payment page increased. Yet overall revenue per site visitor declined. During the same period, the retailer launched a large advertising campaign that brought in many first-time visitors, and it also introduced a prominent discount banner that applied only to low-margin items. Which explanation best accounts for the situation described?
Some shoppers prefer to browse on mobile devices rather than on desktop computers.
The retailer’s customer-service team expanded its hours of operation during the period in question.
An influx of less-qualified visitors from advertising and a shift in purchases toward discounted low-margin items could reduce revenue per visitor even if checkout completion among payment-page visitors improved.
The redesigned checkout flow used larger fonts and fewer form fields.
Cart abandonment can be caused by slow shipping times.
Explanation
This question tests the ability to resolve a paradox by identifying an explanation that reconciles two seemingly contradictory facts. Paradox questions require finding a choice that accounts for both the improved checkout completion rate and the decline in revenue per visitor. The correct answer explains that less-qualified visitors and low-margin purchases reduced revenue despite better conversions. This accounts for the redesign's efficacy by allowing fewer abandonments, while traffic and product shifts explain lower revenue. Thus, it resolves the paradox by introducing changes in visitor quality and behavior. In contrast, choice A addresses design features but fails to explain revenue decline with higher completions. Similarly, choice C notes abandonment causes but does not reconcile the improvement with falling revenue.
A pharmaceutical company reported that a new drug lowered patients’ cholesterol levels more than an older drug in a controlled clinical trial. Yet, in a subsequent analysis of insurance claims data, patients prescribed the new drug experienced no lower rate of heart attacks than patients prescribed the older drug. The claims analysis noted that patients on the new drug were more likely to discontinue treatment within six months because of side effects, and they were also more likely to have been diagnosed with diabetes at baseline. Which explanation best accounts for the situation described?
The claims data included patients with higher baseline risk and higher discontinuation rates on the new drug, which could offset the drug’s cholesterol-lowering advantage when comparing heart-attack outcomes.
Cholesterol levels are only one of many risk factors for heart attacks.
Some patients prefer taking a single pill rather than multiple pills each day.
The older drug has been on the market longer and is therefore more familiar to physicians.
The clinical trial used a double-blind design, whereas the insurance analysis was observational.
Explanation
This question tests the ability to resolve a paradox by identifying an explanation that reconciles two seemingly contradictory facts. Paradox questions require finding a choice that accounts for both the new drug's superior cholesterol reduction in trials and the lack of heart-attack rate improvement in claims data. The correct answer explains that higher baseline risk and discontinuation rates in claims patients offset the drug's benefits. This accounts for the trial efficacy by allowing controlled settings showed advantages, while real-world factors explain similar outcomes. Thus, it resolves the paradox by highlighting selection and adherence differences. In contrast, choice A notes multiple risk factors but fails to explain why outcomes did not differ despite better cholesterol control. Similarly, choice C addresses familiarity but does not reconcile the efficacy discrepancy.
A city introduced a “smart parking” app designed to reduce traffic by directing drivers to available spaces. After implementation, city sensors recorded that average downtown vehicle speed during peak hours increased slightly. Yet air-quality monitors showed a rise in nitrogen dioxide (NO$_2$) concentrations in the same area and time window. The city also expanded curbside pickup zones for delivery services, which reduced the number of general parking spaces on several major streets. Which explanation best accounts for the situation described?
NO$_2$ levels can vary from day to day due to changes in humidity and temperature.
Drivers who use parking apps tend to be more comfortable with smartphone navigation than drivers who do not.
Average vehicle speed is a useful metric for evaluating traffic congestion in many cities.
The app’s interface was redesigned to be more visually appealing shortly after launch.
Reducing general parking spaces increased the amount of idling and stop-and-go behavior from delivery vehicles and drivers searching on adjacent streets, raising NO$_2$ despite slightly faster average speeds on instrumented streets.
Explanation
This question tests the ability to resolve a paradox by identifying an explanation that reconciles two seemingly contradictory facts. Paradox questions require finding a choice that accounts for both the slight increase in vehicle speed and the rise in NO₂ concentrations. The correct answer explains that reduced parking spaces increased idling and stop-and-go from delivery vehicles and searchers, raising NO₂ despite faster speeds on monitored streets. This accounts for the app's traffic benefits by allowing improved flow in some areas, while parking changes explain the pollution increase. Thus, it resolves the paradox by showing pollution rose from unmonitored behaviors offsetting speed gains. In contrast, choice A addresses NO₂ variability but fails to explain the specific rise alongside speed improvements. Similarly, choice E affirms speed as a metric but does not reconcile it with higher pollution.
An airline introduced a new boarding procedure intended to reduce turnaround time between flights. After implementation, average turnaround time decreased by four minutes. Yet the airline’s on-time departure rate did not improve. During the same period, the airline changed its scheduling policy to reduce “buffer time” between flights, and it also began operating more flights out of a congested hub airport where gate availability is limited. Which of the following best accounts for the situation described?
The airline’s planes are serviced by the same ground crew contractors as before.
The new boarding procedure was unpopular with some frequent flyers.
Reducing buffer time and increasing operations at a congested hub can negate improvements in turnaround by leaving less slack to absorb delays unrelated to boarding.
On-time departure rates can be influenced by weather conditions.
Some passengers board more quickly when they travel without carry-on luggage.
Explanation
This question tests the ability to resolve a paradox by identifying an explanation that reconciles two seemingly contradictory facts. Paradox questions require finding a choice that accounts for both the reduced turnaround time from the new procedure and the unchanged on-time departure rate. The correct answer explains that less buffer time and congested hub operations absorbed the time savings without improving departures. This accounts for the procedure's efficiency by allowing faster turnarounds, while scheduling changes explain no net gain. Thus, it resolves the paradox by showing offsets from other policies. In contrast, choice A addresses boarding speed but fails to explain stable departure rates. Similarly, choice D notes weather but does not reconcile the turnaround improvement with unchanged on-time performance.
A conservation agency reintroduced an apex predator to a national park. Ecologists expected that reducing the population of a large herbivore would allow young trees to recover. After five years, surveys showed that the herbivore population did decline markedly, yet the density of young trees in river valleys also declined. At the same time, the number of beavers in those valleys increased substantially, and beaver dams became more common. Which explanation best accounts for the situation described?
Young trees are an important food source for many species, so a decline in young trees can affect other parts of the ecosystem.
The herbivores that remained in the park shifted their feeding to young trees in river valleys, where forage is concentrated.
Beavers increased flooding in river valleys, which reduced seedling survival even as browsing pressure from herbivores fell.
The park’s tree surveys used a different sampling method five years after reintroduction than they used before reintroduction.
The predator population grew more slowly than expected because of harsh winters in the park.
Explanation
This question tests the ability to resolve a paradox by identifying an explanation that reconciles two seemingly contradictory facts. Paradox questions require finding a choice that accounts for both the decline in herbivores and the unexpected decline in young tree density in river valleys. The correct answer explains that increased beaver activity caused flooding, which reduced seedling survival despite lower browsing from herbivores. This accounts for the predator's impact on herbivores by allowing reduced browsing pressure, while beaver dams explain the tree decline through a separate mechanism. Thus, it resolves the paradox by introducing an intervening factor that offsets the expected tree recovery. In contrast, choice A addresses only herbivore behavior but fails to explain why tree density declined if browsing shifted. Similarly, choice D notes broader ecosystem effects but does not reconcile the specific decline in young trees with reduced herbivores.
A city’s public-health department ran a media campaign encouraging residents to get vaccinated against influenza. The department reported that vaccination appointments increased during the campaign. However, at the end of flu season, the city recorded a higher number of reported influenza cases than in the previous year. The department also expanded surveillance by requiring more clinics to submit weekly influenza test results, and rapid tests became more widely available. Which of the following, if true, best resolves the apparent discrepancy?
Clinics sometimes run out of vaccine doses during periods of high demand.
Influenza viruses mutate frequently, requiring vaccines to be updated each year.
Some residents avoid vaccines because they dislike injections.
Expanded surveillance and greater test availability increased detection and reporting of influenza cases, making the recorded case count higher even if true incidence did not rise proportionally.
The campaign’s messaging emphasized protecting vulnerable populations such as older adults.
Explanation
This question tests the ability to resolve a paradox by identifying an explanation that reconciles two seemingly contradictory facts. Paradox questions require finding a choice that accounts for both the increased vaccination appointments from the campaign and the higher reported influenza cases. The correct answer explains that expanded surveillance and testing increased detection, raising reported cases without proportional true incidence growth. This accounts for the campaign's uptake by allowing potential prevention, while surveillance explains the case rise. Thus, it resolves the paradox by attributing the increase to better reporting. In contrast, choice A addresses mutations but fails to explain higher cases despite more vaccinations. Similarly, choice D notes avoidance reasons but does not reconcile campaign success with rising cases.
A city planted thousands of street trees to mitigate the urban heat island effect. Satellite data indicated that average surface temperatures in the city center decreased slightly over three summers. Yet emergency-room visits for heat-related illness increased during the same period. The city’s population of older adults grew, and a housing survey found that many low-income residents lived in top-floor apartments without air conditioning. Which of the following helps explain the seeming contradiction?
Some residents prefer warmer temperatures and spend more time outdoors in summer.
Heat-related illness depends on population vulnerability and indoor conditions as well as outdoor temperatures, so increases in vulnerable residents without cooling can raise ER visits even if average surface temperatures fall.
The city also repaved several major roads during the same period.
Street trees can take several years to reach full canopy coverage.
Satellite measurements of surface temperature differ from measurements of air temperature taken at weather stations.
Explanation
This question tests the ability to resolve a paradox by identifying an explanation that reconciles two seemingly contradictory facts. Paradox questions require finding a choice that accounts for both the slight decrease in surface temperatures from tree planting and the increase in heat-related ER visits. The correct answer explains that more vulnerable residents and poor indoor cooling raised visits despite cooler outdoors. This accounts for the trees' effect by allowing temperature reductions, while demographic and housing factors explain illness rises. Thus, it resolves the paradox by showing illness depends on more than temperature. In contrast, choice A addresses growth time but fails to explain rising visits with lower temperatures. Similarly, choice C notes measurement differences but does not reconcile the temperature drop with increased illnesses.