Seth Crawford, Ph.D.

Thanks for the support Oscar! The coolest part about this study is that it can be applied to every state in the US--and soon. This is the best way to identify the size and composition of marijuana markets and will go a long way towards answering the question: "Will marijuana legalization result...more

Thanks so much Megan! Your contribution is really, really appreciated!

Very nice write-up, thank you for sharing this!

Thanks so much for the donation and the share!

Thanks Rebecca!