Diadochokinetic Movements Of Nine-, Ten-, And Eleven-Year-Old Children

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Abstract
A group of 60 white children[long dash]10 [female]s age 9 yrs.; 10cfs, age 9 yrs.; 10 9s, age 10 yrs.; 10 [male] age 10 yrs.; 10 [female]s age 11 yrs.; and 10 [male] age 11 yrs.[long dash]were taken in groups and instructed to repeat: p, p, p t, t, t k, k, k ptk, ptk, ptk as rapidly and as regularly as possible; then repeat the series twice again. The results were as follows: The number of sounds produced per second increased with age for each of the sounds tested: males made slightly higher scores than females in the same age group for all sounds except the serial repetition of ptk. None of the differences were significant. Further study is indicated.

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