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ERIC Number: ED097231
Record Type: RIE
Publication Date: 1966-Oct
Reference Count: 0
Speed and Accuracy of Addition in Normal Time and Decimal Time Systems.
Gray, T. Harrison; And Others
This study compared the efficiency of decimal and sexagesimal, or normal, time systems in the solution of addition problems, using the time required to reach a solution and the number of errors as dependent variables. Twelve adult subjects solved sets of addition problems composed of 8, 16, or 24 digits, using the decimal and sexagesimal time systems. When the conversion process required by the sexagesimal system was included in the analysis, the results clearly showed that addition using the sexagesimal system required significantly more time (1 1/2 to 2 1/2 times as much) and produced significantly more errors (1 1/2 to 3 times as many). When the conversion process required by the sexagesimal system was excluded from the analysis, there was not significant difference between the two time systems on either dependent variable. (Author/DT)
Publication Type: Reports - Research
Education Level: N/A
Sponsor: Office of the Chief of Research and Development (Army), Washington, DC.
Authoring Institution: George Washington Univ., Alexandria, VA. Human Resources Research Office.