Dichotic listening following idiopathic precocious puberty: Speech processing capacity and temporal efficiency

Eleven right-handed adolescent females with a history of idiopathic precocious puberty (IPP) were compared to 11 pair-matched normal controls of similar maturational status. They were tested on a dichotic consonant-vowel (CV) discrimination task in which syllables were presented simultaneously to the two ears or with an interaural delay of 30 or 60 msec. The IPP and control groups did not differ: (1) in right-ear advantages; (2) in double-correct or total correct measures of accuracy; or (3) in "lag effects." The findings provide further evidence that timing of puberty--maturation rate--is not related to verbal ability or lateralization in adolescent females.