Historical evolution of the discipline with reference to the principle theoretical orientations, research methods and their implications. We will analyze the mechanisms of social perception, social influence, social aspects of
aggression, prejudice, conflicts, pro-social behaviors, interpersonal relationships, attitudes and their measure. Particular attention will be paid to the analysis of the dynamics of social groups, which they are considered central in the training in the social service and in providing basic elements about criminality and social deviance phenomena