ception wasn’t used until the early 1930’s. During this time an American scientist, Joseph Banks Rhine first began his ground breaking experiments testing ESP’s validity.(Encarta) His research was conducted at the Parapsychology Laboratory of North Carolina’s, Duke University.(Encarta) Rhine’s most well-known experiment involved a deck of twenty-five cards. On the cards, written in heavy black ink, each card had a different design on them. The designs included a star, a cross, a square, or wavy lines.(Encarta) The concealed deck of twenty-five cards was shuffled. One random card was drawn from the deck at a time and the test subject was asked to identify the hidden marking on the flip-side of the card. If the test subject correctly identified five out of twenty five cards correctly, it was considered pure chance.(Encarta) Rhine and his
             associates concluded that if the individual named six out
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