Mark L. KnappMark L. Knapp (Ph.D., Penn State University, 1966) is the Jesse H. Jones Centennial Professor Emeritus in Communication and Distinguished Teaching Professor Emeritus at the University of Texas at Austin. Three of his books are: Noverbal Communication in Human Interaction (with J. A. Hall); Interpersonal Communication and Human Relationships (with A. L. Vangelisti); and Lying and Deception in Human Interaction. He is past president of the International Communication Association and the National Communication Association, a Fellow of the International Communication Association, and a Distinguished Scholar in the National Communication Association. He served as editor of Human Communication Research, and developed and edited the Sage Series in Interpersonal Communication. Read More Read Less