I can imagine nothing more disastrous to the administration of justice than a course of study of what is called criminal psychology. Students of human nature I would have them all to be, for such study is essential and leads to nothing but good. But to issue “manuals” that profess to instruct them upon the mysterious working of the human mind; to teach them to weigh the relative worth of provincial mannerism and individual characteristics; to tell the value of a look of the eyes, the smile of the face, and the movement of the hands; to teach them to notice all these things, and then by a process of inductive reasoning to decide upon the guilt or innocence of the individual may be criminal psychology, but it is rubbish none the less, and dangerous rubbish too!
Do the eminent writers of these books ever consider the effect likely to be produced on the minds of judges, magistrates and jurors who may read, believe and adopt their teaching?
Humbly, but very earnestly, I say that any magistrate, judge or juror who is steeped in this kind of teaching is quite unfitted by his supposed knowledge for the task he has in hand. For of all men, judges require the open mind and the clean slate and with them there must be no judgment formed apart from the evidence of fact. They of all men must not be inflated with the idea that they can “read people”—can see through them; that they, independently of evidence, can give a correct judgment.
Let us suppose that we compelled our magistrates, great and small, to pass an examination in criminal psychology, using these “manuals” as textbooks. I venture to say that a queer state of things would follow. The action of magistrates would be dominated by their own individual psychology, and their own psychology would be dominated by the effect the “manual” had produced on their mind. The shallow man would be assured of his competence and knowledge, and he would, to his own satisfaction at least, know all about it. But the greater man would hesitate; he would be in a quandary, on the horns of a dilemma, for he would find that the formula of his “manual,” by which he was to form an opinion as to the guilt of the prisoner, applied with equal force to the innocence of the prisoner.
Let us suppose a case where three magistrates form a Bench, each having been trained according to the “manual.” No. 1 is certain; No. 2 is diffident, and No. 3 is a dreamer and greatly interested in subconsciousness.
A prisoner is before them on a disgraceful charge; he is innocent, and has hitherto lived an irreproachable life. The prisoner protests his innocence, but cannot control himself; he wipes his brow, he smooths his hair, he clenches his fist, and his eyes flash fiercely.
Magistrate No. 1 notices all these things and says to himself: “The prisoner has no self-control; he is in fear, he is passionate, he is charged with a crime of passion, he is guilty!” But magistrate No. 2 also notices all these things and says to himself: “The prisoner is indignant, he feels his position acutely, for he is a respectable man; he fears the consequences the more because he is an innocent man; I am for his acquittal, but I am not sure, for his bearing is compatible with guilt or innocence.” Magistrate No. 3 has been eagerly looking for some proof of subconsciousness, and not having discovered any, he is uninterested in the mental equation that excites his colleagues.
Happy will that Bench be if it possesses a common-sensed old chairman who has not graduated in criminal psychology: who is content to be guided entirely by the actual evidence; and happy will it be for the innocent prisoner too!
So far as I have read these “manuals,” and so far as my personal experience goes—and it is not a short one—I have discovered no outward and visible signs that indicate a prisoner’s guilt that may not at the same time be taken as an indication of the prisoner’s innocence.
But supposing that our worthy magistrates, not being satisfied on psychological grounds, or for other reasons, decide to commit the prisoner for trial by judge and jury. Why, then, there will be curious happenings if judge and jury, with prosecuting and defending counsel, have been trained as per “manual.”