There are plenty of studies that show pot doesn't damage your brain long-term.
And congratulations on finding one obscure test (semantic priming) that might improve while stoned.
Here was my favorite part of the article: "This study builds on previous work by Harvard researchers demonstrating that the learning and memory impairments of heavy marijuana users typically vanish within 28 days of “smoking cessation.” (The slight impairments still existed, however, one week after smoking.)"
Think about what that means. Even a weekend stoner will experience learning and memory impairments throughout the week. So some poor kid who only smokes on he weekend is still going to lose weeks, months or even years of education. These kids will never have a chance.
I just can't get over libs promoting such a selfish drug. You'd think hard-core conservatives would push for legalization, while libtards would be trying to get it banned.