The interpersonal gap is a model of communication developed by John L. Wallen, an educator and a pioneer in the fields of emotional intelligence and interpersonal communication. As Chinmaya and Vargo state in their 1979 paper on Wallen "Many people who conduct interpersonal relations laboratories have been influenced by the ideas of John Wallen, a social psychologist from Portland, Oregon. He has written a number of papers which identify the sources of difficulty in communication. In these writings, Wallen focuses on the process of communication, not the underlying motives, drives, traits, attitudes, or personality characteristics of the individual. Wallen's ideas are easily understandable to laymen and professional alike."