He has spent his career studying how stress affects human performance. His strongest interest is in the psychology of winning--especially as winning applies to the markets. In 1982, Dr. Tharp developed his Investment Psychology Inventory, a test that measures winning and losing traits. Thousands of investors and speculators have taken this test, which includes a written evaluation and ten-minute phone consultation. Dr. Tharp has written five books on successful investing, which provide the core of his investment course. His is a contributing editor for Technical Analysis of Stocks and Commodities and has also written numerous articles for other financial publications. Dr. Tharp is a frequent guest on financial television and radio programs, and has spoken at many investment conferences.