Abstract
The modern laws demand collaborative work among professions connecteded with judicial system: Lawyers, social workers, psychologists, nutritionists, etc. The research: Psychosocial Testing in Childhood, Family and Adolescence Law, has as primary purpose: To conceptually identify, determine and validate the importance and use of psychosocial tests, which establish the legal reforms in the field of Childhood, Adolescence and Family. Through these are assigned powers and importance to the exercise of the psychosocial professionals, in its regulatory function as experts. To assume the multidisciplinary role of those tests it’s necessary to know and highlight the methodological strategies and concepts of professionals, that have contributed to the law for decades. One goal is to recognize the multidisciplinary contribution of the Social Work -known in some countries as Social Assisstency-, in the modernization of the State and legal reforms that includes the human rights approach and the precepts of the Commonwealth of Nations. Also, contribute sensitizing of the legal profession and related careers, in the epistemological and methodological requirement for work collaboratively and to do comprehensive care processes to boys, girls, and adolescents.