"Walter Whately Carington". Biographical Dictionary of Parapsychology. "Carington's best known and most controversial contribution to parapsychology is his "association theory" of telepathy, the basis of which is the concept that minds are systems of ideas and sensa (termed "psychons" by Carington). Such "psychon systems," he held, are not wholly insulated from one another, and in telepathy interaction between psychons in different minds takes place according to the same laws of association as govern the interaction of psychons in a single mind."