In a research study, it is most important for the research assistant to be blind to the participant's assignment to experimental conditions during
A) the collection of the data.
B) the scoring of the data.
C) the interpretation of the data.
D) Both A and B
Question 2
The double-blind control procedure is difficult to conduct in research that is purely psychological in nature primarily because
A) it is difficult to create experimentally adequate and believable placebo manipulations.
B) it is difficult to train assistants to be blind to participant assignment.
C) it is difficult to obtain participants for these designs.
D) these procedures typically take longer to conduct than other procedures.
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