抄録
With regard to play audiometry (C. O. R. -test, and peepshow test) the procedure, applicable age, reliability and threshold of children who consult to this center from 1972 to 1974, were studied and the following results were obtained.
1) Applicable age for C. O. R. test to measure the threshold was from 1.5 to 3 years of age, and that for peepshow test was above 2.5 years of age.
2) In the cases the threshold was not measured at first time in children under 2 years old, by repeating test the threshold was mostly decided by peepshow test.
3) As the threshold of hearing impaired children were unreliable by only one test, they should undergo the careful measurement of threshold by repeated tests.
