Watson-Glaser Critical Thinking Appraisal Interpretation 3 — Questions and Answers
Question 1: A report states that countries with higher chocolate consumption per capita have more Nobel Prize winners per capita. What is the most reasonable interpretation?
- Chocolate consumption improves cognitive ability and leads to Nobel Prizes.
- There is a statistical correlation between chocolate consumption and Nobel Prizes in this data. (Correct answer)
- All Nobel Prize winners eat large amounts of chocolate.
- Increasing chocolate sales in a country will increase its Nobel laureates.
Correct answer: There is a statistical correlation between chocolate consumption and Nobel Prizes in this data.
This is a classic spurious correlation; the data shows a statistical relationship, not a causal one.
Question 2: Passage: 'A hospital with a new electronic records system reported a 15% reduction in medication errors over one year.' Which interpretation is best supported?
- Electronic records systems always reduce medication errors by at least 15%.
- The hospital's medication error rate fell by 15% in the year after implementing the system. (Correct answer)
- The electronic system is the sole reason for the error reduction.
- All hospitals should immediately replace paper records with electronic systems.
Correct answer: The hospital's medication error rate fell by 15% in the year after implementing the system.
The data confirms the reduction happened in that time period at that hospital, without establishing sole causation or universal applicability.
Question 3: Survey results show that 80% of employees at Company X say they feel 'engaged' at work, compared to a national average of 65%. What can be reasonably interpreted?
- Company X has the best workplace culture in the nation.
- Company X employees reported higher engagement than the national average. (Correct answer)
- The national average is inaccurate and underestimates real engagement.
- Employees at Company X will never leave their jobs.
Correct answer: Company X employees reported higher engagement than the national average.
The data supports a comparison of self-reported engagement rates and nothing beyond that.
Question 4: A study found that children who read for pleasure for at least 20 minutes a day had vocabularies twice the size of those who did not. Which is the most cautious interpretation?
- Reading for pleasure is the only way to build a large vocabulary.
- Children who read more had larger vocabularies in this study. (Correct answer)
- All children who don't read for pleasure will have small vocabularies.
- Parents must enforce 20 minutes of daily reading to ensure vocabulary growth.
Correct answer: Children who read more had larger vocabularies in this study.
The study shows an association within its sample; other vocabulary-building factors and broader applications are not addressed.
Question 5: Crime statistics show that a city's violent crime rate dropped by 20% in the year after increasing the number of streetlights. What is an unwarranted interpretation?
- The violent crime rate decreased by 20% in the year following the streetlight expansion.
- Streetlights are the proven cause of the 20% drop in violent crime. (Correct answer)
- The data records a 20% reduction in violent crime alongside a streetlight increase.
- There may be other factors that contributed to the decline in violent crime.
Correct answer: Streetlights are the proven cause of the 20% drop in violent crime.
Claiming streetlights are the 'proven cause' oversteps the evidence, which only shows a temporal correlation.
Question 6: A university reports that graduates of its new accelerated program earn starting salaries 10% higher than traditional graduates. Which interpretation is justified?
- The accelerated program teaches superior skills that employers value more.
- In this university's data, accelerated program graduates had higher starting salaries. (Correct answer)
- All universities should adopt accelerated programs to raise graduate salaries.
- Traditional graduates are less competent than accelerated program graduates.
Correct answer: In this university's data, accelerated program graduates had higher starting salaries.
The justified interpretation stays within the reported data without attributing causes or generalizing beyond the institution.
Question 7: A passage states: 'Athletes who train at high altitude for 3 weeks show a 5% improvement in endurance performance on average.' Which conclusion is best supported?
- All athletes will improve endurance by exactly 5% with altitude training.
- Altitude training is the most effective endurance training method available.
- On average, athletes in this study improved endurance by 5% after high-altitude training. (Correct answer)
- Athletes who do not train at altitude will fail to improve their endurance.
Correct answer: On average, athletes in this study improved endurance by 5% after high-altitude training.
The passage specifies an average finding for athletes who trained under these conditions, which is all the data supports.
Watson-Glaser Critical Thinking Appraisal Interpretation 3
A report states that countries with higher chocolate consumption per capita have more Nobel Prize winners per capita.
What is the most reasonable interpretation?