Believing that the best approach to treating and understanding ADHD is a team formed from representatives of neuroscience, psychoanalysis, and cognitive psychology, in this article I begin by investigating why such a team has not been forged. A brief review of the literature in each field illustrates what each discipline might reasonably contribute to our knowledge about the syndrome. Suggestions are then presented about processing the data from such a team emphasizing the advantages of models using iterative multivariate statistics.