Dr. John Gagnon of the State University of New York at Stony Brook is a sociologist and sexologist. Gagnon and William S. Simon developed the concept of sexual scripts, which posits that a person's sexual behavior and experience of that behavior is influenced by their subjective understanding of their own sexuality. Their work is largely based on symbolic interactionism. This symbolic interactionism is based greatly on what they call "cultural scenarios" which help guide behavior throughout the lifetime.