Stoners have a reputation for being exceptionally mellow, but a recent study of the effects of marijuana use on daily behavior may suggest otherwise. According to researchers from Yale University of Medicine and the Pennsylvania State University, the study found a positive short-term correlation between marijuana use and hostile and impulsive behavior.
"Marijuana use is associated with changes in impulse control and hostility in daily life," according to the study, published in March. Researchers found that participants were more aggressive on days they used marijuana, and the following day, than on days they didn't get high.
The study analyzed 43 participants' marijuana, alcohol, tobacco use and hostile and impulsive behavior daily for 14 days using random effects models. Scientists found that marijuana use alone, without the alcohol and tobacco combination, increased impulsive and hostile behavior on the day participants used the drug and the day after.