The Maximum Duration of Phonation of /a/ in Children
نویسنده
چکیده
S c i e n c e i n S p e e c h C o n u n u n i c a t i o n : W i t h a n E m p h a s i s i n S p e e c h P a t h o l o g y / A u d i o l o g y p r e s e n t e d J u n e 2 , 1 9 7 7 . T i t l e : T h e M a x i m u m D u r a t i o n o f P h o n a t i o n o f / ~ / i n C h i l d r e n . A P P R O V E D B Y M E M B E R S O F T H E T H E S I S C O M M I T T E E : M a r y ' " E C J ° r d o n M e a s u r e m e n t o f m a x i m u m d u r a t i o n o f p h o n a t i o n h a s b e e n s u g g e s t . e d b y s e v e r a l . v o i c e e x p e r t s a s a c l i n i c a l t o o l f o r a s s e s s i n g . v o c a l f u n c t i o n ( A r n o l d , 1 9 5 5 ; I r w ~ n , 1 9 6 5 ; Y a n a g i h a r a , K o i k e a n d v o n L e d e n , 1 9 6 6 ; a n d B o o n e , 1 9 7 1 ) . M o s t o f t h e i n v e s t i g a t i o n s o f m a x i m u m p h o n a t i o n t i m e h a v ~ b e e n c o n d u c t e d u s i n g a d u l t p o p u l a t i o n s . E x c e p t i o n s t o t h i s c a n b e f o u n d i n t h e s t u d i e s b y L a u n e r ( 1 9 7 1 ) a n d C o o m b s ( 1 9 7 6 ) . A n a p p a r e n t n e e d , t h e r e f o r e , e x i s t e d t o i n v e s t i g a t e m a x i m u m p h o n a t i o n t i m e i n c h i l d r e n .
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