William James got interested in these experiences at an event a lot like this. His naturalistic approach is kind of what you've done with your famous varieties, Corpus. And so we ask a whole lot of questions and we put these questions to thousands of people, not just a few dozen as they did back in the day.
More than a third of us admit to having had a spiritual experience. We might have been profoundly moved by a sunset or a painting; or felt that we've connected with our god or with the entire world around us. Such events can be transformative - bringing positive change to our lives and increasing our happiness - but some experiences aren't so great.
In front of a live audience in Washington DC, David Yaden of Johns Hopkins University tells Dr Laurie Santos about his work examining what effect spiritual experiences have on us and how things like meditation and psychedelic drugs can bring about these powerful transformational episodes.
David Yaden is the author of: The Varieties of Spiritual Experience: 21st Century Research and Perspectives.
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