Bias: practice question

A PSM question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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PSM · Bias

Sample item

What is interviewer bias?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

D. Questioning style influences participant responses

Interviewer bias arises when an interviewer's expectations or manner differentially influence how information is elicited or recorded from participants.

Option by option

  • A. Loss of laboratory reagent

    Reagent loss is logistical.

  • B. Random variation in sample size

    Sample variation is chance error.

  • C. Natural disease incubation

    Incubation is disease biology.

  • D. Questioning style influences participant responses (correct)

    Correct: interviewer behaviour can distort collected data.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

More PSM questions

Questions about this PSM question

What is the answer to this PSM question?

The best answer is D, Questioning style influences participant responses. Interviewer bias arises when an interviewer's expectations or manner differentially influence how information is elicited or recorded from participants.

Why is "Loss of laboratory reagent" not the answer?

Reagent loss is logistical.

Why is "Random variation in sample size" not the answer?

Sample variation is chance error.

Why is "Natural disease incubation" not the answer?

Incubation is disease biology.

What concept does this question test?

It tests Bias in PSM. The correct option holds because: Correct: interviewer behaviour can distort collected data.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Bias?

Practise biostatistics with small calculations until sensitivity, predictive values and risk measures are automatic. Then use the flashcards and the other PSM questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.