He has a degree in Psychologist Training from the Federal University of Pará (UFPa), a master's degree in Behavior Theory and Research from UFPa and a PhD in Experimental Psychology from the University of São Paulo. He was coordinator of the Postgraduate Program in Behavior Theory and Research at UFPa from 2002 to 2005. He is currently a full professor in the Postgraduate Program in Neurosciences and Behavior at the Behavioral Theory and Research Center at UFPa. He has experience in the field of Psychology, with an emphasis on Behavior Analysis, working mainly on the following topics: behavior theory, conceptual issues, the explanation and construction of behavior; defining properties of the verbal and non-verbal, cultural and social environment; functions of rules, justifications, and immediate consequences for behavior; functions of circumstantial and historical variables. The theory of control by justifications and immediate consequences. The construction and maintenance of people's broad repertoires, According to Google: Indicator h 25. (Text provided by the author)