In their research on the door-in-the-face technique and blood donation,Cialdini and Ascani (1976)were concerned about the possibility of experimenter bias.What steps did they take to eliminate or reduce this methodological problem?
A)They kept the experimenter blind to participants' conditions.
B)They made use of a double-blind procedure.
C)They deceived the participants.
D)They deceived the experimenters.

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The Answer of In their research on the door-in-the-face technique and blood donation,Cialdini and Ascani (1976)were concerned about the possibility of experimenter bias.What steps did they take to eliminate or reduce this methodological problem?
A)They kept the experimenter blind to participants' conditions.
B)They made use of a double-blind procedure.
C)They deceived the participants.
D)They deceived the experimenters.

In Their Research on the Door-In-The-Face Technique and Blood Donation,Cialdini