In an experiment to study the effects of marijuana usage on memory,previous experiences with drug usage indicate ____.

Question

Quizplus · Accepted Answer

Previous experiences with drug usage are a confounding variable in this study because they may affect memory independently of marijuana usage. This could potentially confound the results and make it difficult to determine if any memory deficits are due to marijuana usage or other factors related to previous drug usage.

In an Experiment to Study the Effects of Marijuana Usage