Twin-Tuition: Meet the Twins

Swedish psychologist Adrian Parker attempted to study the psychic connection between twins at the Twin Studies Center in St. Thomas Hospital in London. Parker conducted psychological experiments using four sets of twins who believed they had experienced distinct and frequent telepathic events. By placing each twin in different rooms, Park applied a series of measured stimuli to see how each would react. The results were surprising. Tune into "Nightline Prime: Beyond Belief" Wednesday, June 29 at 10/9c. (ABC News)