DrWayne and His Associates Developed a New Therapy for Anxiety

Dr.Wayne and his associates developed a new therapy for anxiety.In their research, they had participants who met the criteria for generalized anxiety disorder (GAD) .Group 1 received no treatment while Group 2 received the newly developed treatment for GAD.In this example, Dr.Wayne and his associates most likely used a ________ group.

A) simple control
B) wait list control
C) double-blind
D) placebo control