CU Psychology and Neuroscience聽Professor聽John Hewitt聽(Behavioral Genetics) was聽in the news, being interviewed for an article in CU Boulder Today聽about some research showing increased marijuana use in states where cannabis has been legalized compared to those where it has not. The study, conducted at the University of Minnesota and CU Boulder and聽published in the journal Addiction, examined 3,400 adult twins and found that with pairs of identical twins, one of whom was living in a state with legalized cannabis and one who was not, the twin living in a legalized-cannabis state was 20% more likely to use marijuana. Read more about the study in the , and read the original research paper in .