The Horace Mann School of Teachers College, Columbia University, has conducted a study of hearing during the past five years on pupils at the Horace Mann High School which yielded the accompanying figures and graph. These results may be of general interest as they were obtained on subjects belonging to a decade lower than those studied by Bunch.1
A graph (the solid line) showing the mean hearing of 209 girls at the Horace Mann High School.
The lighter lines show the mean hearing in the succeeding decades, from 20 to 30, 30 to 40, 40 to 50, 50 to 60 and 60 to 70 years, as determined by Bunch.
The graph of mean hearing is presented on the chart, and the graphs of Bunch for the succeeding five decades are reproduced in lighter lines. The age range at the Horace Mann High School is from 9 years and 8 months
YOUNG IB. AVERAGE AND RANGE OF ACUITY OF HEARING OF HIGH SCHOOL PUPILS. Arch Otolaryngol. 1936;24(1):76–77. doi:10.1001/archotol.1936.00640050083008
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