📚 Reasoning Ability – Analogy
Andaman & Nicobar Islands PSC – Program
(Comprehensive, exam‑oriented notes with derivations, tricks & a hard practice question)
1. Learning Objectives
| What you will be able to do after studying these notes |
|---|
| 1. Define “analogy” and understand its importance in PSC tests. 2. Classify the major types of analogical relationships. 3. Apply systematic steps to solve any analogy problem. 4. Identify common pitfalls & develop strategies to avoid them. 5. Solve a hard analogical question that mimics PSC difficulty. |
2. What is an Analogy?
Analogy – A comparison that establishes a similar relationship between two pairs of words or concepts.
Notation : A : B :: C : D
Means “A is to B as C is to D”.
In PSC Reasoning sections, analogies test syntactic (word‑level), semantic (meaning‑level), contextual and logical reasoning.
3. Classification of Analogical Relationships
| Type | Example | Key Feature |
|---|---|---|
| Synonym | Happy : Joyful :: Sad : ___ | Same meaning |
| Antonym | Rise : Fall :: Love : ___ | Opposite meaning |
| Part–Whole | Wheel : Car :: Leaf : ___ | Component to entity |
| Cause–Effect | Heat : Melt :: Cold : ___ | One causes the other |
| Function | Book : Read :: Pen : ___ | Object used for a function |
| Sequence | First : Second :: Third : ___ | Order in a series |
| Characteristic | Tall : Height :: Short : ___ | Property/attribute |
| Proportion / Ratio | 3 : 6 :: 2 : ___ | Numerical relation |
| Domain–Category | Apple : Fruit :: Carrot : ___ | Category membership |
| Tool–Usage | Hammer : Nail :: Brush : ___ | Tool used with object |
| Process–Result | Water : Wet :: Fire : ___ | Process yields result |
Tip – A single word can belong to multiple categories; the key is which relationship fits the first pair.
4. Systematic Approach to Solve Analogies
| Step | What to Do | Why |
|---|---|---|
| 1. Identify & Validate the First Relationship | Read A : B. List all possible relations (synonym, antonym, etc.). | Ensures you are not guessing; the rest depends on this relation. |
| 2. Narrow Down Candidate Options for C | Look at the list of options for C. Eliminate those that cannot logically pair with D based on the identified relation. | Saves time and reduces errors. |
| 3. Test the Relation with C | For each candidate C, see if the same relation holds with D. | Confirms compatibility. |
| 4. Verify Logical Consistency | Ensure that the relationship is exact (e.g., not just similar but identical in type). | Avoids “partially correct” answers that are common pitfalls. |
| 5. Double‑Check for Multiple Valid Answers | If two options fit, re‑examine the first relationship. One may be a better match. | PSC usually has a unique answer; if not, choose the more logical one. |
5. Derivation of “Relationship Score” (Optional for Practice)
- Relationship Score (RS) = Number of matching features / Total possible features
- Features can be semantic, syntactic, contextual, numerical.
- In practice, we usually set a threshold of ≥ 3 to accept a match.
Example
A : B = “Rain : Wet”
Features:
- Cause–Effect (rain causes wetness)
- Direct Relationship (one thing directly leads to the other)
- Physical Process
For C : D = “Heat : Melt”
RS = 3/3 = 1 → perfect match.
This numeric view is useful when you need to compare multiple candidates quickly.
6. Common Tricky Points & How to Avoid Them
| Pitfall | Why it Happens | Fix |
|---|---|---|
| Assuming “synonym” on every pair | Many analogies use synonyms; you may over‑apply. | Explicitly test synonym first; if it fails, move to other types. |
| Confusing “part–whole” with “cause–effect” | Both involve two entities but the direction differs. | Check if the first item completes the second (whole) or produces it (cause). |
| Ignoring context | Words can have multiple meanings (e.g., bank as riverbank or financial). | Consider all meanings; choose the one that fits the relationship. |
| Over‑reliance on word length | Length of words doesn’t affect relation. | Focus on meaning, not form. |
| Choosing the most obvious pair | “Obvious” often means common sense but not logical match. | Validate using the systematic approach. |
| Missing numeric proportions | Proportional analogies require exact ratios. | Compute ratio and check all options. |
| Not accounting for double‑meaning | A word can satisfy two relationships; pick the one that matches both pairs. | Cross‑check both pairs independently. |