Trials: 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.

Try it

PSM · Trials

Sample item

What reduces observer and participant expectation bias?

ASelectionBBlindingCConfoundingDRecall

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

The answer and the reasoning

B. Blinding

This item reviews Trials; Blinding is the best answer because it directly fits the forensic or public-health principle described.

Option by option

A. Selection
Selection is unsupported by the key information.
B. Blinding (correct)
Correct. Blinding matches the defining principle.
C. Confounding
Confounding does not fit the stated scenario.
D. Recall
Recall is plausible but not the best answer.

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.

Questions about this PSM question

What is the answer to this PSM question?

The best answer is B, Blinding. This item reviews Trials; Blinding is the best answer because it directly fits the forensic or public-health principle described.

Why is "Selection" not the answer?

Selection is unsupported by the key information.

Why is "Confounding" not the answer?

Confounding does not fit the stated scenario.

Why is "Recall" not the answer?

Recall is plausible but not the best answer.

What concept does this question test?

It tests Trials in PSM. The correct option holds because: Correct. Blinding matches the defining principle.

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 Trials?

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.