Carlos A. Bruner Iturbide was a distinguished contributor to the worldwide community of behavior analysts for more than 50 years. After receiving his licenciatura with distinction from the National Autonomous University of Mexico (UNAM) in 1968, he attained a Ph. D. degree in psychology under one of the leading scholars of behavioral psychology, Nat Schoenfeld, from Queens College of the City University of New York in 1981. By that time, he already had joined the faculty of the School of Psychology at UNAM, where he held the rank of Professor. Carlos was first recognized as a National Researcher in 1984, when the title was established by the National Research System (CONACYT). He subsequently rose through the levels of recognition to the highest, Level III, a recognition that he continued to hold along with his title of Professor at UNAM until his death.