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WEAKEN = DAMAGE THE SUPPORT, NOT PROVE THE CONCLUSION FALSE

THE MOST IMPORTANT GMAT WEAKEN PATTERNS

Pattern 1: Cause → Effect
Pattern 2: Effect → Cause
Pattern 3: Prediction

Argument: If city builds subway, traffic will decrease.
Gap: Future assumption.

Prethink: What could prevent prediction?
Right-answer skeleton:
* Prediction failed elsewhere
* Important factor ignored
* Unexpected behavior

Pattern 4: Survey / Poll
Pattern 5: Recommendation

Argument: Company should do X.
Gap: X actually helps.

Prethink:
What cost, side effect, obstacle, or alternative exists?

Right-answer skeleton:
* Hidden cost
* Practical obstacle
* Better alternative
* Expected benefit won't occur

Pattern 6: Comparison

Argument:
Company A succeeded using strategy.
Company B should use same strategy.

Right-answer skeleton:
* Important difference
* Relevant distinction
* Conditions not comparable

Pattern 7: Statistical Average
Argument: Average income increased. Therefore residents are wealthier.

Pattern 8: Representative Example
Pattern 9: Numbers vs Percentages
Pattern 10: Necessary vs Sufficient

HOW TO PRETHINK FAST

PRETHINK TEMPLATE

Cause-effect?
→ Alternative cause.

Recommendation?
→ Hidden cost/obstacle.

Survey?
→ Sampling problem.

Comparison?
→ Relevant difference.

Prediction?
→ Why prediction may fail.

Statistics?
→ Numbers vs percentages.

OPTION EVALUATION METHOD
For each choice:
Step 1 - Identify which part it affects.
Evidence?
Conclusion?
Gap?
Step 2 - Ask: "If true, does conclusion become less likely?"
Step 3 - Compare strength. Pick strongest damage.
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EVALUATE THE ARGUMENT — GMAT FOCUS MASTER BOOK

FAST IDENTIFICATION - Other than Typical stems:
Which question would be most useful to determine whether...
Which issue would be most important to establish...
Which question should be answered before the conclusion can be accepted...

THE MOST COMMON EVALUATE PATTERNS

PATTERN 6: FEASIBILITY
Argument:
New policy will reduce costs.
Gap:
Can it actually be implemented?
Prethink:
Can proposed action realistically happen?
Correct evaluate wording:
"Can the company implement the policy without significant operational disruptions?"
YES:
Supports.
NO:
Hurts.

PATTERN 7: MAGNITUDE
Argument:
Benefit exceeds cost.
Gap:
Need sizes.
Prethink:
How large are benefit and cost?
Correct evaluate wording:
"Will expected savings exceed implementation expenses?"
YES:
Good.
NO:
Bad.

PATTERN 8: NECESSARY ASSUMPTION CHECK
Argument:
New medicine will increase recovery rates.
Gap:
Maybe patients won't use it.
Prethink:
Necessary condition.
Correct evaluate wording:
"Will most patients actually take the medicine as prescribed?"
YES:
Argument survives.
NO:
Argument collapses.

PATTERN 9: GENERALIZATION
Argument:
One city succeeded with policy.
Therefore nation should adopt it.
Gap:
Similarity.
Prethink:
Are cases sufficiently similar?
Correct evaluate wording:
"Are conditions in the nation similar to those in the city?"
YES:
Stronger.
NO:
Weaker.

PATTERN 10: PREDICTION
Argument:
Trend today means future outcome.
Gap:
Will conditions stay same?
Prethink:
Will key factors continue?
Correct evaluate wording:
"Are the factors responsible for the current trend expected to continue?"
YES:
Supports prediction.
NO:
Weakens prediction.

6. PRETHINKING SYSTEM
Never try predicting exact answer.
Instead identify uncertainty category.
Ask:
What must be checked?
Categories:
Alternative cause?
Representative sample?
Comparable groups?
Direction of causation?
Prediction stability?
Feasibility?
Magnitude?
Necessary condition?
Your prethink should be one label only.

7. WHAT CORRECT ANSWERS USUALLY LOOK LIKE
Notice wording:
Whether...
Did...
Are...
Was...
Can...
To what extent...
How many...
How much...
Correct answers often look like investigations.
Examples:
"Whether customers knew..."
"Whether costs exceeded..."
"Did participants differ..."
"Were conditions similar..."
"Can company obtain..."
These sound like questions a researcher would ask.

8. TRAP ANSWERS

TRAP 1: IRRELEVANT INFORMATION
"How old is the CEO?"
Even if answered, conclusion unchanged.
Reject.

TRAP 2: BACKGROUND INFORMATION
Provides context.
Doesn't affect conclusion.
Reject.
Example:
"When was company founded?"

TRAP 3: DETAIL HUNTING
Exact numbers not central.
Example:
"What was the precise cost of printer ink?"
May be unnecessary.

TRAP 4: ONE-SIDED
Only strengthens.
Doesn't evaluate.
Example:
"Did sales increase after campaign?"
Argument already says they did.
No evaluation.

TRAP 5: CONCLUSION RESTATEMENT
Example:
"Will profits increase?"
That's the conclusion itself.
Need to evaluate reasoning, not repeat conclusion.
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