Andrés M. Pérez-Acosta is a psychologist (with Honor Degree, 1996) from the National University of Colombia, and Ph.D. (with Thesis Summa Cum Laude, 2001) by the University of Seville (Spain) under the direction of Santiago Benjumea Rodríguez and José I. Navarro Guzmán. He earned his doctorate thanks to the Mutis Scholarship of the Spanish Agency for International Cooperation. He completed two postdoctoral fellowships in the United States (with Mauricio R. Papini, Texas Christian University, 2007) and Chile (with Edgar H. Vogel, Universidad de Talca, 2008). He is currently Professor (Full) of Psychology in the School of Medicine and Health Sciences of University of the Rosario (Bogota, Colombia). He was visiting Professor at the University of Sao Paulo, Brazil (2015; host: José Lino Oliveira Bueno). His research program is the basic-and-applied psychology of associative learning. Currently, he is leading the Observatory of Self-Medication Behavior.