Map the relational structure, not the surface features
Ask what relationships are shared between domains, not just what objects look similar.
Key takeaways
- What it is: Ask what relationships are shared between domains, not just what objects look similar.
- Why it works: Gentner’s structure-mapping theory shows that effective analogies depend on mapping relational predicates (X causes Y; X precedes Y) rather than object attributes (both are round; both are large). Surface-feature matches feel compelling but often mislead; structural matches are the ones that carry real predictive power. When you consciously ask "what relationships are shared?" rather than "what looks similar?" you engage the part of cognition that produces reliable cross-domain transfer.
- Evidence: Backed by observational / correlational evidence.
- Avoid: Accepting an analogy because it feels compelling — usually because of surface similarity — without checking whether the underlying relationships are actually shared.
Why it works
Gentner’s structure-mapping theory shows that effective analogies depend on mapping relational predicates (X causes Y; X precedes Y) rather than object attributes (both are round; both are large). Surface-feature matches feel compelling but often mislead; structural matches are the ones that carry real predictive power. When you consciously ask "what relationships are shared?" rather than "what looks similar?" you engage the part of cognition that produces reliable cross-domain transfer.
How to do it
- 1Identify the domain you understand well (the "base") and the new domain (the "target").
- 2For the base domain, write the key relationships: "A causes B," "C depends on D."
- 3Ask whether those same relationships hold in the target domain, not whether the objects look alike.
- 4Only conclude the analogy is valid if the relationship structure maps — discard it if only surface features match.
What the evidence says
ObservationalGentner’s structure-mapping research, including experimental work with children and adults, shows that relational similarity drives analogical inference more reliably than surface similarity. Structural mapping predicts which analogies lead to correct inferences.
Honest caveat: Structure-mapping describes how good analogies work; applying it consciously requires practice and explicit knowledge of the base domain’s relational structure.
- — Gentner (1983), "Structure-mapping: A theoretical framework for analogy," Cognitive Science, 7(2), 155–170
Common mistake
Accepting an analogy because it feels compelling — usually because of surface similarity — without checking whether the underlying relationships are actually shared.
IX Coach asks you to articulate the relational structure you are relying on when you use an analogy in your reasoning, so the inference is load-bearing rather than illustrative.
Practice this with IX Coach →