The relation of the inner word to the outer visible one has long interested psychologists. - June Downey

The handwriting of any individual would be found to resemble the characteristic tracings shown by his pulse and respiration and fatigue curves. Nor is the interest in the variational aspect of handwriting restricted to recording the diversities in penmanship from individual to individual; it is also engaged in noting variations from day to day in the handwriting of any given person under the influence of fatigue or emotion or disease. But, however numerous, such observations and however legitimate the speculations they engender, it remains for the physiologist and the psychologist, with the aid perhaps of the sociologist, to compass the scientific study of the variational factor in handwriting.

In any case it is evident that there is a psychology as well as a sociology of handwriting. Tremendously complicated as the problem of diagnosis of individual traits from those tiny strokes of the pen appears, it is yet a legitimate problem of science; for the more progress psychology makes, the more evident it becomes that there is not a mode of expression which is not rooted to its finest detail in the complex psycho-physical organism. Meanwhile, it is fortunate that the task of identifying graphic signs should not be left wholly to the intuitions of the graphologist. Experimental work that seeks to induce variation in writing through a control of outer conditions must in time correlate certain definite variations in conditions with variation in such aspects of writing as size, speed, accuracy in alignment, inequality of control and the like.

Speculation must wait upon the facts.