Resolve Paradox or Discrepancy
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GRE Verbal › Resolve Paradox or Discrepancy
In a mid-sized coastal city, hospital administrators reported that, after a new hand-hygiene campaign began, the proportion of staff observed using sanitizer at key moments rose from 42% to 78% over six months. Yet during the same period, the hospital’s rate of certain hospital-acquired infections (HAIs) increased by 12%. The campaign did not change staffing levels, and the hospital did not expand bed capacity. However, the laboratory also began using a more sensitive molecular test for identifying the pathogens responsible for those HAIs, replacing a culture-based test that had been standard for years. Which of the following, if true, best resolves the apparent discrepancy?
Several nearby hospitals also reported increases in HAIs during the same six-month period.
The hospital’s infection-control team reduced the number of posters encouraging hand hygiene after the first month of the campaign.
The hand-hygiene campaign improved sanitizer use primarily in low-risk wards rather than in the intensive care unit, where most HAIs occur.
The new molecular test detects infections that the older culture-based test often failed to identify, increasing the number of confirmed HAIs without a true increase in underlying infections.
Some staff members reported that they preferred sanitizer to soap because it is faster to use between patient visits.
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 increase in hand sanitizer use and the rise in reported hospital-acquired infections (HAIs) without negating either observation. The correct answer explains that the new molecular test detects more infections than the older culture-based test, leading to more confirmed HAIs even if actual infections did not increase. This accounts for the improved hygiene compliance by allowing that it may have prevented a true rise in infections, while the test change explains the apparent increase in HAIs. Thus, it resolves the paradox by showing that the HAI rise is due to better detection rather than worsening hygiene. In contrast, choice A addresses only staff preferences for sanitizer but fails to explain why HAIs increased despite better compliance. Similarly, choice E explains uneven sanitizer use but does not reconcile the overall hygiene improvement with rising HAIs.
A school district replaced its traditional math curriculum with a new program emphasizing conceptual understanding and group problem-solving. After one year, classroom observations showed more student participation and more time spent discussing reasoning. Yet standardized test scores in math declined slightly. The district also changed the test-preparation schedule, reducing the number of weeks devoted to practice tests, and many teachers reported needing time to learn the new curriculum. Which of the following, if true, best resolves the apparent discrepancy?
The district also updated its science curriculum during the same year.
Students sometimes enjoy group work more than independent work.
Some parents prefer that schools emphasize memorization of formulas.
The new curriculum may improve deeper understanding but, in the short term, reduced test practice and teacher unfamiliarity can lower standardized scores even as participation increases.
Standardized math tests include multiple-choice questions as well as short-answer questions.
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 participation from the new curriculum and the slight decline in test scores. The correct answer explains that short-term factors like less test practice and teacher adjustment lowered scores despite deeper engagement. This accounts for the curriculum's benefits by allowing better understanding long-term, while transitional issues explain score drops. Thus, it resolves the paradox by highlighting temporary implementation effects. In contrast, choice A addresses enjoyment but fails to explain declining scores with more participation. Similarly, choice D notes preferences but does not reconcile engagement gains with test outcomes.
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.
Street trees can take several years to reach full canopy coverage.
The city also repaved several major roads during the same period.
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.
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?
Some residents avoid vaccines because they dislike injections.
The campaign’s messaging emphasized protecting vulnerable populations such as older adults.
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.
Clinics sometimes run out of vaccine doses during periods of high demand.
Influenza viruses mutate frequently, requiring vaccines to be updated each year.
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.
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?
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.
Some shoppers prefer to browse on mobile devices rather than on desktop computers.
Cart abandonment can be caused by slow shipping times.
The retailer’s customer-service team expanded its hours of operation during the period in question.
The redesigned checkout flow used larger fonts and fewer form fields.
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 study of a lake ecosystem found that after an invasive filter-feeding mussel became established, water clarity increased markedly. Yet, over the same period, populations of certain native fish declined. The study also reported that phytoplankton biomass decreased and that aquatic plants expanded into deeper parts of the lake. Which explanation best accounts for the situation described?
The lake’s water clarity was measured using a standardized instrument known as a Secchi disk.
Aquatic plants provide habitat for many lake organisms, including fish.
Native fish populations can fluctuate naturally from year to year due to random variation in reproduction.
Clearer water generally improves recreational opportunities such as swimming and boating.
The invasive mussel reduced phytoplankton, altering the food web and reducing food availability for zooplankton and small fish that native fish depend on, even as clarity increased.
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 water clarity from invasive mussels and the decline in native fish populations. The correct answer explains that reduced phytoplankton altered the food web, decreasing food for fish despite clarity gains. This accounts for the mussels' filtering by allowing clearer water, while food chain effects explain fish declines. Thus, it resolves the paradox by showing indirect negative impacts. In contrast, choice A affirms recreational benefits but fails to explain fish population drops. Similarly, choice C notes fluctuations but does not reconcile clarity improvements with declines.
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?
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.
Drivers who use parking apps tend to be more comfortable with smartphone navigation than drivers who do not.
NO$_2$ levels can vary from day to day due to changes in humidity and temperature.
The app’s interface was redesigned to be more visually appealing shortly after launch.
Average vehicle speed is a useful metric for evaluating traffic congestion in many cities.
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.
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?
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.
Some employees dislike project-management software because it requires learning a new interface.
The company’s managers held fewer in-person meetings after adopting the chat platform.
Chat platforms can make it easier for employees to contact colleagues in other departments.
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.
A manufacturing firm installed energy-efficient lighting and upgraded its HVAC system, expecting to reduce electricity consumption. Utility bills, however, show that total electricity use increased by 8% in the year after the upgrades. During that year, the firm also extended production hours into the night and added a new quality-control line that runs continuously to monitor output. The number of employees remained roughly constant. Which of the following, if true, best resolves the apparent discrepancy?
The upgraded lighting produces a more uniform illumination than the previous lighting system.
Some employees complained that the building felt cooler after the HVAC upgrade than it had before.
Energy-efficient lighting typically lasts longer than older lighting technologies and therefore requires fewer bulb replacements.
The new quality-control line and extended operating hours increased total runtime of electrical equipment enough to outweigh efficiency gains.
The firm’s electricity supplier increased rates during the year after the upgrades.
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 energy-efficient upgrades and the unexpected increase in electricity use. The correct answer explains that extended hours and a new quality-control line increased equipment runtime, outweighing efficiency gains. This accounts for the upgrades' potential savings by allowing they improved per-hour efficiency, while added operations explain the total use rise. Thus, it resolves the paradox by introducing increased activity that offsets the upgrades' benefits. In contrast, choice B addresses rate increases but fails to explain higher consumption itself. Similarly, choice E notes lighting longevity but does not reconcile the efficiency intent with rising bills.
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?
The company’s clients became more demanding about project quality in recent years.
Some employees used their extra day off to pursue hobbies and personal projects.
The company’s managers held more meetings after the policy change to discuss the transition.
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.
Employees often prefer having a three-day weekend to having a higher salary.
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.