Dr. Sullivan is conducting a clinical trial to determine if vitamin Z can improve test performance of students in an introductory college nutrition course. Dr. Sullivan puts all the students' names in a hat and draws names to determine if they will be placed in the control or the experimental group. The experimental group receives a capsule of vitamin Z and the control group a "sugar pill" that tastes and looks identical to the vitamin Z capsule. Neither Dr. Sullivan nor the participants knows who is receiving which treatment. This experiment is BEST described as

Question

Quizplus · Accepted Answer

This experiment is double-blind because both Dr. Sullivan and the participants do not know who is receiving the treatment or the placebo. It is also random selection because the participants' names were drawn from a hat to determine which group they would be placed in. Finally, it is placebo-controlled because the control group receives a placebo (sugar pill) that is meant to mimic the appearance and taste of the treatment. Therefore, the best description of this experiment is double-blind, random selection, placebo-controlled.

Dr Sullivan Is Conducting a Clinical Trial to Determine If