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Deductive and Inductive Reasoning Flashcards

7 cards from real OACP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. A recruiter reviews OACP test scores and finds that candidates who performed well on logic sections always passed the interview. Candidate Lee passed the interview. Can we conclude Lee performed well on logic?

    Answer: No, because this would be affirming the consequent

    Inferring the cause from the effect commits the fallacy of affirming the consequent — other reasons could explain passing.

  2. A police board reviews data from 30 cities and concludes that body cameras reduce complaints by an average of 40%. This conclusion is best classified as:

    Answer: An inductive statistical generalization

    Aggregating data across multiple observations to form a general claim is a statistical inductive generalization.

  3. Which of the following is a SOUND deductive argument?

    Answer: All detectives write reports; Alex is a detective; Alex writes reports

    A sound argument is both valid (correct form) and has true premises — only option B satisfies both conditions.

  4. During an OACP verbal reasoning section, you read: 'Whenever Officer Park is on duty, response times improve. Response times have not improved. What can you conclude?'

    Answer: Officer Park is not on duty

    This is modus tollens: if P then Q; not Q; therefore not P — Officer Park being on duty would have caused improvement.

  5. An analyst examining crime trends states: 'We've seen increases in retail theft every December for 12 consecutive years, so it will likely increase again this December.' This is:

    Answer: Inductive reasoning based on historical pattern

    Projecting a future event based on a recurring historical pattern is classic inductive reasoning.

  6. Which statement about inductive reasoning is TRUE in the context of police work?

    Answer: Inductive conclusions remain open to revision as new evidence emerges

    Inductive conclusions are probabilistic and should always be revisited when new evidence contradicts the pattern.

  7. An officer writes: 'If the alarm was triggered, a window must be broken. The alarm was triggered.' What is the logically necessary next step in this deductive argument?

    Answer: A window is broken

    Modus ponens: if P then Q; P is true; therefore Q must be true — the window is broken.