Depends on the drugs , situation and person . I generally lean towards negative . The only counter example was my old roommate . They were more functional and studious when smoking weed and were better able to deal with the stress from their degree . So they were high probably more often than not . The functional and studious part could be solved , possibly , as they age and change . The stress probably less so . It also made them kind of my ideal roommate . I tend to get along well with people who are stoned . Though , then again , their dealer , who I liked and was rooting for , died of an overdose this past year . He even put me up at his house and I helped train his dog for a while . I think he was struggling to figure out his life and drugs factored heavily into this , eventually killing him when he was barely into his 20 s . His funeral was very sad .