Complex sentence: Robert S. Siegler (also known as Bob Siegler), born 12 May 1949, is an American psychologist and Teresa Heinz Professor of Psychology at Carnegie Mellon University and recipient of the American Psychological Association's 2005 Distinguished Scientific Contribution Award.
Split into simpler sentences: Robert S. Siegler (12 May 1949 -) is an American psychologist and Teresa Heinz Professor of Psychology at Carnegie Mellon University. He is a recipient of the American Psychological Association's 2005 Distinguished Scientific Contribution Award.