DrSesay Is Testing a New Antidepressant

Multiple Choice

Dr.Sesay is testing a new antidepressant.He gives the experimental group the new medication and the control group sugar pills that look exactly the same as the real medication.He is excited about all the good he believes this new medication will do for people.When he gives his control group the sugar pills,he shows little emotion,but when he hands out the antidepressants,he grins at his participants.To control for ______________,Dr.Sesay should use a _______________________ design instead.

A) experimenter expectancy effects;double-blind
B) placebo effects;correlational
C) experimenter expectancy effects;correlational
D) placebo effects;double-blind