Question

imagine you are collaborating with researchers studying the effect of marijuana on driving. 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. the dependent variable is operationalized as: which pill participants receive. the number of collisions participants have. participant age. none of the above.

Explanation:

A dependent variable is the outcome measured to see if it is affected by an independent variable. Here, the independent variable is the type of pill received, and the measured outcome is collision count.

Answer:

○ the number of collisions participants have.