During the last 30 years in America, the national soccer team has had at least…
2024
During the last 30 years in America, the national soccer team has had at least 70% of its players born during the months January to March. Similarly, in India, at least 40% of soccer players have been born during the first three months of the year. In fact, this statistic holds true for most countries. This shows that in most European and Asian countries, parents with kids born early in the year are more likely to encourage a soccer career.
Which of the following best explains why the conclusion need not be the best explanation for the statistic?
- A.
Of the remaining members, 60% or more tend to be born between the months of April and June.
- B.
Parents of kids born in the second half of the year have displayed a measurable intent to promote scholarly careers.
- C.
The age cut-off for kids to try out for a team in most European and Asian countries is calculated as on December 31 of any year, and the older the kid is during trials, the greater the chances of getting the right opportunities.
- D.
During the last 50 years, on average 30% of the kids have been born during the first three months of the year.
Show answer & explanation
Correct answer: C
Concept
A statistical correlation (birth month vs. team selection) can have more than one possible cause. To show that a given causal conclusion "need not be the best explanation," find an option that supplies a cause operating through a genuinely different mechanism - not merely a variant of the same mechanism (here, differential parental encouragement) restated for a different subgroup or a different half of the year.
Application
The argument observes: most selected soccer players are born Jan-March, and concludes this is because parents of early-born kids push them toward soccer.
Since most youth leagues fix the age-group cut-off at December 31, two kids in the same age group can be up to 11 months apart in real age.
A child born in January is, on average, physically bigger and more developed at trial time than a same-group child born in November or December.
Coaches selecting on physical performance at trials will then pick more January-March-born kids for reasons of maturity alone, with no parental push required.
This is a documented phenomenon (the relative age effect in youth sport selection), so it is a genuine mechanism, independent of parental choice, for the same statistic.
Cross-check
Adding more detail about how the remaining, smaller group is spread across other months does not name any cause for the original skew, so it cannot rival the encouragement account.
A claim that later-born kids' parents push academics still routes through parental choice tied to birth timing - the very category of mechanism the passage already invokes for early-born kids, just applied to the other half of the year - so it reinforces the general premise (parents treat kids differently by birth month) rather than supplying a mechanism outside parental choice altogether.
A 50-year general-population baseline shows the sports figure is elevated relative to the wider population, but it does not say why - it leaves the cause question open instead of answering it differently.
Only the age-cut-off mechanism gives a full causal chain rooted in physical maturity at trial time - a factor no parent controls - for the exact same birth-month pattern, which is why it is the option that shows the encouragement conclusion need not be the best explanation.