Professor József Haller, neurobiologist, researcher, university teacher, doctoral school headmaster, doctor of the Hungarian Academy of Sciences since 2004. His special field is neurobiology of behaviour and criminal psychology. He had been guest tutor at the Leiden University and after his return home scientific adviser of the Experimental Research Institute of Medicine. He was tutor at the Eötvös Loránd University and at the doctoral school of the Semmelweis University. Presently he is tenured professor of the Department of Criminal Psychology at the Faculty of Law Enforcement of the National University of Public Service and director of the Drug Research Institute, managing editor of the journal Interdiszciplináris Drogszemle. First of all we asked Professor Haller about the nature of aggressivity, then about special effects of drugs, about the doctoral education at the National University of Public Service and about the possible role of Belügyi Szemle in doctoral education. Prof. Dr. József Haller was interviewed by Valér Dános, editor-in-chief of Belügyi Szemle and Csaba Szabó, managing editor of the journal.