4) If a researcher did not wish the participants or the testers/data gatherers to know the condition to which each participant has been allocated in an experiment the design to use would be a:
A) Single blind
B) Double blind
C) Triple blind
D) Venetian blind

Question

Quizplus · Accepted Answer

Double blind design is used when both the participants and the testers/data gatherers are unaware of the condition to which each participant has been allocated in an experiment. This is done to prevent any kind of bias or influence on the results. Single blind design only involves participants being unaware of their allocated condition while the testers/data gatherers are aware. Triple blind design involves participants, testers/data gatherers, and the analysts being unaware of the allocated condition, but this is not relevant to the question. "Venetian blind" is a type of window blind and not a design in research methods.

4) If a Researcher Did Not Wish the Participants or the Testers/data