sentences:  As of November 2011, Patel joined the New York Academy of Medicine as a Senior Research Scientist and is the head of the Center for Cognitive Studies in Medicine and Public Health and is an adjunct professor of Biomedical informatics at Columbia University in NY.In 1978 Elstein, Shulman and Sprafka applied cognitive science methods to investigate physicians’ clinical competence, developing a model of hypothetico-deductive reasoning which proposed that physicians reason by generating and testing a set of hypotheses to explain clinical data.This is an example of backward (hypothesis-to-data) reasoning.