Question

Participants are assigned by chance to either a) receive a pill that contains THC, the active ingredient in marijuana, OR b) a harmless placebo pill. Neither the researchers nor the participants know who is getting which pill. After taking the pill, participants are asked to drive a computerized driving simulator. The number of collisions participants have is measured.A. a single-blind procedure. B. a double-blind procedure.C. Random assignment-D. Nonrandom assignment

Answer 1

B. a double-blind procedure.

Step-by-step explanation:

A double-blind procedure in research refers to a setting where neither the researchers nor the participants know who is getting which pill. This means that the researchers as well as the participants do not know that whether they are getting the actual treatment or whether they are in the control group. Hence, the given example is a double-blind procedure. However, in a number of scenarios this is not possible as the researchers have to collect data as per the difference between the two groups and have to analyse them separately.