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The writings on what is called nervousness are in a state of confusion and uncertainty. The clinical conception of neuropathic diathesis is unclear, not to say inaccurate. The psychologic theories that attempt to explain the mechanism of "these most common functional disorders" are built on a bed of sand. Not until there are attempts to study this group of diseases by experimental methods of physiology and psychology and to interpret the data through careful statistical analysis can one hope for a more lucid, permanent basis for the diagnosis and treatment of "nervousness."
Dr. Olson has made such an attempt in this monograph. He has tried to study one phase of the subject from the ground up—the normal child—and although he has not answered many important questions or given the pediatrists much aid in the diagnosis and treatment of this group of disorders, he has done what must
The Measurement of Nervous Habits in Normal Children,. Am J Dis Child. 1930;39(6):1366. doi:10.1001/archpedi.1930.01930180216026