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Scientific Reading Comprehension Flashcards

7 cards from real OAT 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 passage presents two competing hypotheses about macular degeneration. The author concludes that Hypothesis B is better supported. Based on the passage, a student should:

    Answer: Accept Hypothesis B as the passage's conclusion while recognizing it may be revised with new evidence

    Scientific conclusions are provisional and passage-based reasoning requires accepting the author's supported conclusion while acknowledging the nature of scientific inquiry.

  2. A methods section states: 'Tear osmolarity was measured using osmometry with an intraclass correlation coefficient (ICC) of 0.94.' The ICC value primarily indicates:

    Answer: High measurement reliability and consistency across repeated measurements

    ICC near 1.0 indicates excellent test-retest or inter-rater reliability of the measurement instrument.

  3. A passage states that lens accommodation amplitude follows a 'monotonically decreasing function' with age. This means:

    Answer: Accommodation amplitude decreases consistently with every increase in age, never increasing

    A monotonically decreasing function never increases; it either decreases or stays constant at each step.

  4. A passage compares observational data showing higher rates of glaucoma in patients using a certain medication. A limitation noted by the authors is 'indication bias.' This refers to:

    Answer: Patients prescribed the medication may already have higher disease risk, confounding the association

    Indication bias occurs when a drug is prescribed to sicker patients, making the drug appear harmful even if it is not.

  5. A passage includes a Kaplan-Meier survival curve comparing two treatments for preventing visual field loss. The curve that stays higher for a longer period represents:

    Answer: The treatment associated with better survival (longer time to visual field loss)

    In a survival curve, higher curves indicate more participants remaining event-free, representing better outcomes.

  6. A passage reports a systematic review and meta-analysis of 15 randomized trials on ocular hypertension treatment. Compared to a single RCT, the meta-analysis primarily offers:

    Answer: Greater statistical power and more precise effect estimates by pooling data across studies

    Meta-analyses pool data from multiple studies, increasing sample size and statistical power while producing more precise overall estimates.

  7. A passage discusses a dose-response relationship between UV light exposure and cataract formation. The presence of a dose-response relationship is considered important evidence because:

    Answer: It supports a causal relationship between exposure and outcome

    A dose-response relationship (more exposure = more effect) is one of Bradford Hill's criteria supporting causality.