A writer observes that cities with more coffee shops also have higher rates of tech startup formation, and concludes that coffee shops cause entrepreneurship. What is the primary logical problem?
AThe argument uses a causal chain structure when it should focus on a single cause
BThe argument commits the post hoc fallacy by assuming precedence implies causation
CThe argument confuses correlation with causation — both may result from a third factor like urban density or educated population
DThe evidence is anecdotal and should use statistics instead
Two things frequently appearing together does not mean one causes the other. Both coffee shops and startups may be effects of a third cause — dense urban environments, high-income neighborhoods, proximity to universities — rather than one producing the other. A genuine causal argument must establish the mechanism: how exactly does coffee shop presence produce entrepreneurship? Without that, the association is correlation only. (Post hoc fallacy specifically involves temporal sequence — A before B — which is not the issue here.)
Question 2 Multiple Choice
A cause-and-effect essay argues that social media caused declining teen mental health. Which move is most essential to making the argument rigorous rather than superficial?
AProviding a detailed history of social media platform development
BAcknowledging competing explanations (economic stress, sleep deprivation, academic pressure) and explaining why social media is the more powerful or primary cause
CUsing the strongest available correlation data between social media use and mental health outcomes
DOrganizing causes from least to most significant to build toward the thesis
Correlation data supports the argument but doesn't establish causation. The most important move in a rigorous causal essay is preemptive rebuttal of alternative causes. If you don't engage competing explanations, readers are left with multiple plausible accounts and no reason to accept yours over theirs. Addressing alternatives and explaining why your account is more complete or more powerful is what converts a correlational observation into a genuine causal argument.
Question 3 True / False
Establishing that one event consistently preceded another across many cases is sufficient to conclude that the first event caused the second.
TTrue
FFalse
Answer: False
Consistent temporal sequence strengthens a causal hypothesis but does not establish causation. The post hoc fallacy ('after this, therefore because of this') lies in assuming that precedence equals causation. Night consistently precedes day, but night doesn't cause day. What converts sequence into a genuine causal argument is identifying the mechanism — how and why A produces B — and ruling out plausible alternatives. Sequence is evidence; it is not proof of causation.
Question 4 True / False
Using hedging language like 'contributed to' or 'was a significant factor in' weakens a cause-and-effect argument by signaling lack of confidence.
TTrue
FFalse
Answer: False
Hedging language protects the argument from overreach — it does not signal weakness; it signals intellectual honesty. Most real-world outcomes have multiple interacting causes. A claim that one factor was 'the sole cause' is easily refuted by naming any other contributing factor. A qualified claim that names your factor as significant while acknowledging others is more defensible. Appropriate hedging insulates the argument from the post hoc fallacy and from charges of naivety about causal complexity.
Question 5 Short Answer
What is the difference between establishing that two events are correlated and establishing that one caused the other? What additional elements does a causal argument need?
Think about your answer, then reveal below.
Model answer: Correlation shows that two things tend to co-occur or move together — it establishes a pattern but not a mechanism. A causal argument additionally requires: (1) a plausible mechanism explaining how A produces B, (2) evidence that A preceded B (temporal ordering), and (3) elimination of plausible alternative explanations. Without a mechanism, any correlation might reflect a shared third cause. Without ruling out alternatives, the causal claim is just one hypothesis among many.
This is the core intellectual challenge of cause-and-effect writing. The genre requires more than noticing a pattern — it requires arguing for a specific causal story over competing ones. This is why preemptive rebuttal of alternatives, combined with explaining the causal mechanism, is what distinguishes a rigorous causal essay from a loose correlation observation.