A double-blind is a research protocol in which both the participants and the experimenters administering the procedure or assessing outcomes are kept unaware of which subjects receive which treatment assignments. This design eliminates observer-expectancy effects (experimenter bias) and placebo effects (participant bias), producing more reliable causal inferences. The blindness is typically maintained through coded intervention packages managed by an independent third party. [formal: duplex caecitas | substrate: behavior | horizon: a moment | explicit: yes | epoch: 0.01]
Accepted ontology entry
double-blind
A double-blind is a research protocol in which both the participants and the experimenters administering the procedure or assessing outcomes are kept unaware of which subjects receive which treatment assignments. This design eliminates obs…
Definition
Why it is in scope
A human-made research protocol in which both study participants and experimenters are kept unaware of treatment assignments, built to persist through scientific practice and methodology documentation to eliminate observer-expectancy and placebo biases.
Names and aliases
- double-blinden · CANONICAL
Relations from this entry
- cmrvpfry601wq2ceichuy36vpINSTANCE_OF →
Direction tested: double-blind IS a specific kind of experimental design method — a protocol where neither participants nor investigators know group assignments. Per Law 9, a competent speaker calls it a kind of experimental design. Specific→general.
- cmrcnsksr00wt13vzw03olz8hSERVES →
Double-blind SERVES experiment: the method is built and maintained for the sake of experimental validity — its designed purpose is to eliminate bias in experiments. The servant (double-blind) points at the master (experiment).
Relations to this entry
No accepted relations in this direction.
Record identity
- Created
- Jul 22, 2026, 10:53 AM UTC
- Content hash
- 82d8a97785f94bc2f9ca1a99a47ead2b7f5c5dd109a69dd68654a314dea9e2c5