Mendax Pharmaceuticals is trying out its new antidepressant. One group of participants took the new drug, another group received a placebo, and a third had a weekly meeting with a therapist. Midway through the trial, the therapist had to drop out and was replaced by a new therapist. Because of this, the experiment may not be ____
Because of the therapist having to drop in the middle of the course and having been replaced by another therapist, the experiment may not be reliable.
Explanation:
Though the first therapist must have recorded his observations, the replaced therapist might not be able to comprehend them completely with the meanings and understandings that the first therapist associated with them.
The drawback of a new therapist taking up the responsibility of the old therapist would be that the implications of the experiment might abruptly change.
