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The psychologist William Stern in 1900 made the suggestion that the speed at which an individual prefers to receive sensory impressions (for example, a musical melody) as well as the speed at which he engages most comfortably in activity are influenced to a considerable degree by a more or less constant "personal tempo" peculiar to each individual. Since then a number of other investigators (cited by Dr. Frischeisen-Kohler) have found evidence seeming to confirm this suggestion. In the investigation under discussion, Dr. Frischeisen-Kohler undertakes to determine the part played by heredity in the determination of this "personal tempo." The tests chosen for the investigation are (a) tapping experiments: (1) tapping with the finger on the table in whatever position the subject may choose, (2) tapping on the edge of the table with outstretched index finger and (3) tapping with the foot on the floor. In each of these tests the
Sammlung psychiatrischer und neurologischer Einzeldarstellungen. JAMA. 1933;101(11):877–878. doi:10.1001/jama.1933.02740360057036
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