Podcast:Hidden Brain Published On: Mon Mar 25 2019 Description: Twin studies aren't just for twins. They're a paradigm for all of us, a way to explore an old question: how much are we shaped by our genes, and how much by our environment? Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.