(Scenario I) In Scenario I the nature of the stimuli (haptic and visual) during the study and test phase made:
A) it impossible to create a single-blind procedure.
B) it impossible to create a double-blind procedure.
C) it possible to introduce experimenter-expectancy effect.
D) all of the above.

Question

Quizplus · Accepted Answer

The nature of the stimuli (haptic and visual) could make it challenging to blind the participants or the researchers to the conditions, potentially introducing experimenter-expectancy effects, thus making all of the options correct.

(Scenario I) in Scenario I the Nature of the Stimuli