A doctor who believes strongly that antidepressants work better than?"talk therapy" tests depressed patients by treating half of them with antidepressants and the other half with talk therapy. After six months the patients are evaluated on a scale of 1 to?5, with 5 indicating the greatest improvement.

a. The doctor is concerned that if his most severely depressed patients do not receive the?antidepressants, they will get much worse. He therefore decides that the most severe patients will be assigned to receive the antidepressants. Explain why this will affect his ability to determine which approach works best.

a. The doctor is concerned that if his most severely depressed patients do not receive the antidepressants, they will get much worse. He therefore decides that the most severe patients will be assigned to receive the antidepressants. Explain why this will affect his ability to determine which approach works best. 0 A. The doctor is creating a second treatment group that is dependent on the severity of the patient's depression. This will further confound the results. O B. The doctor is letting his empathy get in the way of treating the patients objectively. This may cause personal issues for either the doctor or the patients over the course of the treatment. O C. The doctor is assigning all antidepressants to only the most seveme depressed people. 0 D. If the doctor decides on the treatment, this could introduce bias