Common Cause Medium

Common Cause problems present two statements that are both effects of some unstated common cause. Neither statement causes the other; instead, they are parallel outcomes of a shared underlying event or condition. These problems test your ability to recognize when events are correlated through a common origin rather than directly causing each other.

10Worksheets
200+Practice Questions
IntermediateDifficulty
2-3 hoursHours to Master

Introduction to Common Cause Medium

Common Cause problems present two statements that are both effects of some unstated common cause. Neither statement causes the other; instead, they are parallel outcomes of a shared underlying event or condition. These problems test your ability to recognize when events are correlated through a common origin rather than directly causing each other.

Prerequisites

Understanding of cause-effect relationships Concept of correlation vs causation Ability to identify third-factor explanations Logical reasoning skills
Why This Matters: Common Cause problems appear in 2-3 questions in SSC CGL and Banking PO exams. They test understanding of indirect relationships and correlation vs causation.

How to Solve Common Cause Medium Problems

1

Step 1: Read both statements carefully

2

Step 2: Check if Statement I could cause Statement II

3

Step 3: Check if Statement II could cause Statement I

4

Step 4: If neither directly causes the other, consider a common cause

5

Step 5: Identify a plausible event that could lead to both statements

6

Step 6: Verify that the common cause logically explains both outcomes

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Step 7: Conclude that both statements are effects of a common cause

Pro Strategy: When two events occur together, don't automatically assume one causes the other. Consider whether a third factor could be causing both. Economic, natural, or political events often serve as common causes for multiple outcomes.

Example Problem

Example: Statement I: Unemployment rate increased significantly. Statement II: Consumer spending dropped sharply. Solution: Step 1: Read both statements Step 2: Can unemployment cause reduced spending? Yes, but is that the only explanation? Step 3: Can reduced spending cause unemployment? Possibly, through reduced production Step 4: Both could be true, but they might share a common cause Step 5: Economic recession could cause both high unemployment AND low consumer spending Step 6: A common cause (recession) explains both outcomes Step 7: Therefore, both are effects of a common cause Answer: Both statements are effects of some common cause

Pro Tips & Tricks

  • Look for events that naturally occur together without direct causation
  • Economic downturns cause multiple negative outcomes (unemployment, reduced spending, business failures)
  • Natural disasters cause multiple effects (property damage, displacement, economic loss)
  • Government policies cause multiple societal changes
  • Technological advances cause multiple industry shifts
  • If A and B are correlated but neither logically causes the other, suspect a common cause

Shortcut Methods to Solve Faster

If both statements describe outcomes of the same type of event, suspect common cause
Economic indicators often move together due to common economic conditions
Weather events cause multiple simultaneous effects
Policy changes cause multiple related outcomes
Neither statement contains an action that could cause the other → common cause likely

Common Mistakes to Avoid

Assuming direct causation when correlation exists
Missing the possibility of a third-factor explanation
Forcing a direct causal relationship where none exists
Failing to recognize that events can have multiple effects

Exam Importance

Common Cause Medium is an important topic for various competitive exams. Here's how frequently it appears:

SSC CGL
2-3 questions
BANKING PO
2-3 questions
RAILWAYS RRB
1-2 questions
CAT
1-2 questions
INSURANCE
2-3 questions

Ready to Master Common Cause Medium?

Start with Worksheet 1 and work your way up to expert level! Each worksheet includes:

20 practice questions
Detailed solutions
Step-by-step explanations
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