Arguments

• How to analyse arguments for validity, assumptions, flaws, and strength in verbal reasoning.
• To identify strengthen, weaken, assumption, and parallel reasoning question types.
• To name common fallacies and spot them in answer choices and passages.
• To master Class 12 argument-based items for CLAT and board-level reasoning papers.

Level 1 — Foundations

Verbal: An argument = premises + conclusion. Critical reasoning asks how extra statements interact with this structure.

Question types:

Assumption test: Negate candidate assumption — if argument collapses, that was necessary assumption.

Strengthen vs strengthen except: Read stem twice — EXCEPT reverses goal.

Level 2 — Exam depth

Common fallacies: Straw man (distort opposition), false dichotomy (only two choices), ad hominem (attack person), circular reasoning (conclusion in premise).

Scope of strengthener: Ideal strengthener bridges gap between premise and conclusion — not just related fact.

Weaken by alternate cause: Shows same outcome from different reason — breaks causal chain.

Parallel form: Abstract structure: "All X→Y; Z is X; so Z is Y" — match symbols not topic words.

Exam timing: Assumption questions often fastest if you state conclusion first in one sentence.

Find necessary assumption

Argument: "This drug reduces symptoms in trials, so it should be sold over the counter."
Gap: trials ≠ long-term safety / self-dose risk.
Assumption: **Patients can use it safely without prescription oversight** (negate: if unsafe without doctor, argument fails).

Weaken with alternate explanation

Claim: Open-plan offices boost collaboration because noise increases conversations.
Weaken: **Noise causes headphones and relocation to quiet rooms, reducing talk.**
Attacks proposed mechanism, not just conclusion label.

• Assumption vs premise — difference?
• Name flaw: "Either we ban phones or learning collapses."
• Write one strengthener for "Exercise improves mood."
• Stretch: Formalise modus tollens pattern in argument about traffic fines.

Revision tip: Revisit adjacent topics in Verbal Reasoning before mixed practice on Arguments.

Open the Practice tab for graded questions on Arguments.

For assumption questions, state the conclusion, then ask: what must I believe for this to follow? Strengtheners that merely restate the conclusion are traps — eliminate first. Parallel reasoning items: strip nouns to letters (All A→B) before reading choices. Keep a one-page fallacy list for last-week revision: straw man, false dichotomy, ad hominem, circularity.

Argument analysis bridges logical deduction validity and debate rebuttal structure — the same invalid forms appear in both. When reading editorials for unseen passages, label one premise and one conclusion daily. Assumption questions mirror implicit premise hunting in implication puzzles. Strengthen/weaken drills improve proposal writing because you learn which evidence actually moves a decision-maker.

Keep a dedicated notebook spread for this topic: one page for methods, one for worked mistakes, and one for mixed drill from the Practice tab. Review weekly by explaining the core idea aloud in under sixty seconds without notes.