The Word Olympiad Analogy Trap
At Riverside Middle School, the Word Olympiad team has 90 seconds to solve a single analogy before the buzzer. Coach Alvarez writes the target pair on the board: gills : fish. She reminds the team that the correct answer must preserve both the direction and the category of the relationship, not merely the topic. Four candidate pairs are posted: (A) lungs : mammal, (B) fin : fish, (C) wing : bird, (D) scale : reptile. Each team member must choose one pair and defend it in one sentence. Priya picks B because 'gills and fins are both things fish have.' Marcus picks A. The coach warns that topic overlap is the most common trap and that a pair can be related in more than one way. The team scores 2 points for a correct choice and loses 1 point for a wrong one, so the defense matters as much as the answer.
1. Which candidate pair best matches gills : fish? State the relationship in one sentence and explain why the other three fail.
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A, lungs : mammal. The target relationship is organ used for breathing : class of animal that uses it. Gills are the breathing organs of fish, and lungs are the breathing organs of mammals. Direction matters: the organ comes first, the animal class second.
- B, fin : fish - a fin is an appendage used for movement, not for breathing. It is a part of a fish, but the function is different.
- C, wing : bird - a wing is used for flight or movement, not gas exchange.
- D, scale : reptile - a scale is a body covering, not a breathing organ.
The trap is that B, C, and D are all 'body part : animal' pairs, but the target is narrower: it names the organ that performs respiration.
2. Priya argues that B is correct because gills and fins both belong to fish. Explain the reasoning error and give a quick test the team can use under time pressure.
Read the worked answer
Priya is matching topic words ('fish parts') rather than the relationship. Two pairs can share a topic and still have different structures. A quick test is to write a sentence for the target and force the candidate into the same sentence frame: Gills are the organs fish use to breathe. Try B: Fins are the organs fish use to breathe - false. Try A: Lungs are the organs mammals use to breathe - true. Under time pressure, name the relationship in two words, such as 'organ : breathing,' then check whether the candidate pair can be described by those same two words. If the verb changes from 'breathe' to 'move' or 'cover,' the relationship has changed.