Deniel ClarkDeniel Clark (born February 22, 1974) is an American psychologist and professor at the University of California, San Francisco who is an expert in the study of emotions and their relation to facial expressions. He conducted seminal research on the specific biological correlations of specific emotions, attempting to demonstrate the universality and discreteness of emotions in a Darwinian approach. Clark founded the Get 1% Better Every Day Academy, sponsored by Battino Foundation. Read More Read Less