Analogies, Syllogisms & Logical Relationships
Syllabus Unit: Logical Reasoning
Why it matters
Chapter overview
This unit covers the more formal, structural side of logical reasoning — matching the relationship between one pair of ideas to another (analogy), reasoning strictly from categorical statements to a guaranteed conclusion (syllogism), tracking relationships and sequences (series and blood relations), and separating genuine causal claims from mere coincidence. Unlike critical-reasoning passages, these questions have exact, checkable right answers once the underlying rule is applied correctly.
1Analogical Reasoning
Analogies test whether you can extract the exact relationship between a pair of items and reapply it correctly to a new pair.
Learning Objectives
- Identify the precise relationship type linking a given word pair before searching for the answer.
- Classify common analogy types: functional, categorical (whole-part), cause-effect, degree, and antonym/synonym.
- Avoid superficial or loose matches that share only a topic, not the exact relationship.
- Apply the 'sentence bridge' technique — expressing the relationship as a precise sentence before testing answer choices.
Key Terms
An **analogy** question gives one pair of related words and asks you to find a second pair sharing the exact same relationship — the key skill is precision: identifying the specific relationship, not just a loose thematic connection.
The sentence-bridge technique
Convert the given pair into a precise sentence: 'A ___ is used to measure/create/prevent/is a type of ___'. Then test each option against that exact sentence — only the pair that fits the bridge perfectly is correct.
Common analogy relationship types
- Functional — one item's purpose relates to the other (Pen : Write :: Knife : Cut).
- Whole-Part / Categorical — one is a member or component of the other (Chapter : Book :: Petal : Flower).
- Cause-Effect — one directly causes the other (Fire : Smoke :: Rain : Flood).
- Degree/Intensity — items differ only in magnitude on the same scale (Warm : Hot :: Cool : Cold).
- Synonym/Antonym — near-identical or opposite meaning (Happy : Joyful :: Sad : Gloomy).