Analogies and classification
Solve by naming the relationship or category before comparing answer choices.
State the relationship#
In “painter : brush :: writer : pen,” the relation is person to commonly used tool. Naming it prevents choosing an option that merely belongs to the same topic.
Relationships can include part-to-whole, cause-to-effect, degree, function, location, sequence, or category membership.
Preserve direction#
“Bird : nest” is creature to home. Reversing the second pair to “kennel : dog” breaks that direction even though the concepts relate.
Classification#
For an odd-one-out problem, identify the rule shared by most items. If the choices are triangle, square, circle, and rectangle, circle differs because it has no straight sides.
Some lists allow several possible groupings. A well-formed question supplies answer choices and context that make one property clearly intended.
Common mistakes#
Avoid vague labels such as “they go together.” State the relation in a sentence and apply it unchanged. Do not invent a special exception for one option.
Verification#
Read the analogy as “A relates to B in the same way C relates to D.” For classification, explain why every included item fits and why the excluded one does not.
Key points
- An analogy compares relationships, not surface similarity.
- Preserve direction from the first pair to the second.
- Classification depends on one clear defining property.
- Test every option against the same rule.