Paper 1 · Research Aptitude
UGC NET December 2023 (11.12.2023) Shift-II
A research design in which either the investigator or the participant is not aware of the treatment a participant is receiving refers to:
ASingle-blind study ✓ Correct
BHalf-blind study
CDouble-blind study
DLongitudinal study
Correct answer: (A) Single-blind study — A design where only one party is unaware of the treatment is a single-blind study, so that is the answer.
Explanation
★A design where only one party is unaware of the treatment is a single-blind study, so that is the answer.
★Blinding hides who receives which treatment to reduce bias.
★In a single-blind study only one side, usually the participant, is unaware.
★The other side still knows the treatment allocation.
★In a double-blind study both the participant and the investigator are unaware.
★So a design where either one is unaware is single-blind, not double-blind.
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