Intelligent study of the problem of recidivism means catching the repeater as early as possible and making a diagnosis and prognosis for disposal of his case at once or in the future. The advantages of studying the recidivist when young are many, both from a scientific and a reformatory point of view. It is often also of immense importance to study the adult repeated offender. The disposal of him offers more difficulties frequently than the adjustment of the juvenile case. There is one matter in connection with adult offenders upon which I wish to lay special emphasis. It is in regard to the parole of criminals. It seems clear to me that if the whole matter of adult probation is to be placed upon the most sensible basis, the scientific facts which have bearing upon the situation must be brought into use. I hold that no criminal should be released upon parole until enough of a study has been made of his individuality and the causative factors of his delinquency so that there may be some sort of a guarantee that his offenses will not be continued. As it stands, almost nothing of this sort is being done. It should be the first and main inquiry of any board of parole to know whether or not the individual under consideration is likely to be a recidivist. Several points of view would be connected in such an inquiry, but the point we are concerned with today is one of the greatest value for the decision. The first question to be asked, if the matter is to be sensibly decided, is about the mental status of the individual. This inquiry with its various ramifications will often be found of great significance in answering the vital question: “Will crime be committed again by this individual?”