How would I know? I have never been a big-time stoner. But I could never concentrte when I was high, although, no one knew I was a stoner. All my friends are stoners and they are EXTREMELY dumb. If you have time to get down from your high and adjust your mind then you can do work easier because marijuana can relax your body and brain and so you do thinking on one subject. but i didn't get those results, lucky you!