They found that, for the most part, pot use did not precipitate conduct problems, but rather, conduct problems often preceded pot use. Not surprisingly, the authors suggest that self-medication may be at play.
The team studied 400 kids between 10 and 12 years old, beginning in 2004. They were asked a number of questions—about their behavior and mental health, substance use, and their friends’ substance use—once a year till 2010 and then once more in 2012. Urine tests were used to verify the self-reports about pot use.
And though it was just correlation, the results were telling. Among the 365 kids who continued the study till the end, there was no sense that pot use increased the risk of conduct problems.