Over the last two decades, he has developed his research around the multiplicity of objects that constitute deviant behaviour, with emphasis on the drug phenomenon, juvenile crime and delinquency, the feeling of insecurity, domestic violence, sexual abuse of minors and children in contact with the justice system, prostitution and other forms of sex work and urban marginality and social exclusion.
Assuming the bio-psychosocial complexity of all these phenomena, it adopts a broad methodological grid, from laboratory research to field research, from extensive studies to case studies, from quantitative to qualitative.