Top CAT scores in VARC come less from reading faster and more from reading sharper. The tough options are rarely wrong on facts; they're wrong on reasoning — a correlation dressed up as a cause, a reported opinion pinned on the author, an inference that sounds sensible but the passage never licensed. Critical thinking is the habit that catches all of these: as you read, you track what's being claimed, what actually supports it, and what the argument quietly assumes. This cheat sheet turns that habit into concrete moves — separating fact from opinion, finding the conclusion, surfacing hidden assumptions, weighing evidence, spotting fallacies, and inferring only within limits. Every box carries a worked mini-example, because reasoning skills stick once you've watched them cut a tempting wrong option. It sits alongside the rest of Optima Learn's CAT preparation; once you're timing full sets, check where you stand with the CAT score predictor.
1Read as a Skeptic
Don't just absorb the passage — interrogate every claim as you go.
Critical reading = ask "what's claimed, what's the support, what's assumed?"
Example: A passage states "screen time harms focus." Ask for the claim, the evidence, and the assumption behind it. Answer: the reader who tracks all three, not just the headline.
CAT Hack: a running "claim / support / gap" note turns passive reading into active analysis.
2Separate Fact from Opinion
Distinguish what's verifiable from what's the author's judgment.
Fact = checkable; opinion = evaluative language (should, best, unfortunately).
Example: "GDP grew 6%" is fact; "the growth was disappointing" is opinion. An attitude question keys off the second. Answer: the opinion carries the stance.
Common Mistake: treating the author's evaluative phrasing as neutral reporting.
3Find the Main Conclusion
Locate the one claim everything else is there to support.
The conclusion is what the author wants you to believe; the rest is scaffolding.
Example: "Costs fell. Efficiency rose. So solar will beat coal." The last line is the conclusion. Answer: the claim the premises point toward.
CAT Hack: the "therefore" test — which sentence could follow the words "and therefore…"?
4Premise vs Conclusion
Know which statements do the supporting and which one gets supported.
Premise → because / since; conclusion → therefore / thus / so.
Example: "Since demand is inelastic, a tax won't cut consumption." "Since" flags the premise; the rest is the conclusion. Answer: map support → claim, not the reverse.
Common Mistake: flipping the two and defending a premise as if it were the point.
5Surface the Hidden Assumption
Every argument leans on an unstated link — find it.
Assumption = the bridge between the evidence and the conclusion.
Example: "The ad ran, sales rose, so the ad worked" assumes no other cause drove the rise. Answer: the unstated "nothing else lifted sales".
CAT Hack: negate the assumption — if the argument falls apart, you've found it.
6Weigh the Evidence
Ask whether the support is relevant, sufficient and representative.
Good evidence fits the claim, covers enough, and isn't cherry-picked.
Example: A single anecdote used to "prove" a nationwide trend is unrepresentative. Answer: the reader who flags the thin sample, not the vivid story.
CAT Insight: CAT loves a bold claim propped on one-off evidence; that gap is often exactly what the question probes.
7Spot the Logical Fallacy
Watch for reasoning that looks valid but isn't.
Common traps: correlation as causation, false dichotomy, hasty generalisation.
Example: "Rich countries recycle more, so recycling causes wealth" reverses cause and effect. Answer: name the flaw, don't accept the leap.
CAT Favourite: the correlation-to-causation jump is the most tested reasoning flaw on CAT.
8Author's View vs Reported View
Track who is speaking — the author, or someone the author cites.
Signposts like "critics claim" and "some argue" mark views the author may not share.
Example: "Proponents insist markets self-correct; the evidence suggests otherwise." The author disagrees with the proponents. Answer: attribute each view to the right speaker.
Common Mistake: pinning a reported opinion on the author.
9Mind the Qualifiers & Scope
"Some," "most," "may" and "always" quietly change what's claimed.
A claim's strength lives in its quantifier and its modal.
Example: "Some studies suggest X" is not "X is established." An option that drops the hedge overstates the text. Answer: keep the qualifier the author used.
CAT Insight: swapping "some" for "all" is the classic distortion buried in inference options.
10Follow the Turn
The author's real position usually sits after the contrast.
Contrast and concession words (but, however, although) mark where reasoning pivots.
Example: "The plan is popular. However, it's unaffordable." The point is the second clause. Answer: read the turn as the thesis, not the setup.
CAT Hack: mark every but / however / yet — each is a signpost to the author's stance.
11Test the Counterargument
Notice how the author handles the opposing view.
Does the author concede it, rebut it, or simply ignore it?
Example: A passage that raises a rival theory and then dismantles it is arguing, not surveying. Answer: the option that captures the rebuttal, not neutrality.
CAT Insight: how the author treats objections reveals their true position and their tone.
12Infer Within Limits
Draw only what the text forces — resist over-reading.
A valid inference can't survive being denied by the passage.
Example: "Most engineers prefer X" does not license "engineers dislike Y." Answer: stop at what's entailed, not what's imaginable.
Common Mistake: building a chain of "likely" steps the passage never authorised.
13Cause, Correlation & Conditions
Don't confuse "linked to" with "causes," or "necessary" with "sufficient."
Correlation ≠ causation; necessary ≠ sufficient.
Example: "Water is necessary for life" doesn't mean water alone sustains it. Answer: keep the exact logical relation the passage states.
CAT Favourite: condition-confusion (necessary vs sufficient) surfaces in the tougher inference sets.
14Judge Intent Before You Answer
Is the author persuading, analysing, or just describing?
Intent sets the reading mode and constrains what a right answer can say.
Example: A purely descriptive passage won't support a "the author argues that…" option. Answer: match the answer to the author's purpose.
CAT Hack: name the intent (persuade / analyse / describe) in one word before you hit the options.