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Experimental Blinding
“What someone knows about assignment can alter what they do, observe, or report.”
01 / SUMMARY
In short
Blinding conceals assignment from participants, staff, outcome assessors, or analysts when feasible. It aims to reduce bias from expectations, differential attention, and judgment.
03 / SCENE
In the wild
An assessor scoring a clinical image without knowing the patient's treatment has less room to favor it through expectation.
04 / LIMIT
The limit
Double-blind is vague unless the blinded groups are named, and some studies cannot be blinded.
FINAL NOTE
What remains
Look for specific roles: participants, caregivers, assessors, and analysts.