. Bulletin of the University of Wisconsin. Science. O'SHEAâASrECTS OF MENTAL ECONOMY. 195 ing at midnight, going on the principle that one hour is as good as another for study and the fresh morning hours are the best for social pastimes. But practically all those who reported testified that their minds worked best in the forenoon; eighteen reported being best in the afternoon, while two found they could accomplish more at 5 o'clock in the morning than at any other hour. The best hours ranged from 7 to 12 in the forenoon, while the choicest period of the day is from 9 to 11. These hours accord
. Bulletin of the University of Wisconsin. Science. O'SHEAâASrECTS OF MENTAL ECONOMY. 195 ing at midnight, going on the principle that one hour is as good as another for study and the fresh morning hours are the best for social pastimes. But practically all those who reported testified that their minds worked best in the forenoon; eighteen reported being best in the afternoon, while two found they could accomplish more at 5 o'clock in the morning than at any other hour. The best hours ranged from 7 to 12 in the forenoon, while the choicest period of the day is from 9 to 11. These hours accord with investigations made by Lombard, although his results are not by any means conclusive, since too few sub- jects have been studied and disturbing factors such as the influ- ence of alcohol, tobacco, and food, make his data in a measure unreliable. Still his curve showing the rhythm of daily fatigue is at least suggestive, and may be given here: 8 & iQiiit i a j -^ s fe t e 9 to n ia i a s <+ s c. enâiâiâiâiâiâiâi â â T iâiâr ' r â¢ârââiâi i T-i t^-t ZcO*. £00 IfcC. 120 â â¦Ci Fig. 18.âShowing at each hour of the day and night how many centimeters a weight of 3,000 grammes could be raised by repeated voluntary contrac- tions of the forefinger before fatigue set in. The curve is highest at 10 to 11 a. M. and 10 to 11 p. m. Lowest 3 to 4 p. m. and 3 to 4 a. m. Circle with dot observation made just after taking food ; square with dot smoking ;⢠work done eight minutes after drinking fifteen cubic centimeters of whisky. (Donaldson after Lombard.) There can be little doubt that for most people the morning hours are the most profitable to be devoted to diligent, concen-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original University of Wisconsin. Madison, Wis. : The University
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