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Linguistic Features of Japanese Twins at 3 or 4 Years of Age Evaluated by Illinois Test of Psycholinguistic Abilities

Published online by Cambridge University Press:  21 February 2012

Yoko Kobayashi ,
Kazuo Hayakawa ,
Rituko Hattori ,
Mikiko Ito ,
Kenji Kato ,
Chisato Hayashi  and
Hiroshi Mikami
Yoko Kobayashi*
Affiliation:
Department of Health Promotion Science, Faculty of Health Science Graduate School of Medicine, Osaka University, Osaka, Japan. kobayoko.0626@car.ocn.ne.jp
Kazuo Hayakawa
Affiliation:
Department of Health Promotion Science, Faculty of Health Science Graduate School of Medicine, Osaka University, Osaka, Japan.
Rituko Hattori
Affiliation:
Graduate School of Nursing, Gihu College of Nursing, Gihu, Japan.
Mikiko Ito
Affiliation:
Department of Health Promotion Science, Faculty of Health Science Graduate School of Medicine, Osaka University, Osaka, Japan.
Kenji Kato
Affiliation:
Department of Medical Epidemiology and Biostatistics, The Karolinska Institute, Stockholm, Sweden.
Chisato Hayashi
Affiliation:
Department of Health Promotion Science, Faculty of Health Science Graduate School of Medicine, Osaka University, Osaka, Japan.
Hiroshi Mikami
Affiliation:
Department of Health Promotion Science, Faculty of Health Science Graduate School of Medicine, Osaka University, Osaka, Japan.
*
*Address for correspondence: Yoko Kobayashi, Department of Health Promotion Science, Nursing Science, Course of Health Science, Graduate School of Medicine, Osaka University 1-7 Yamada-oka, Suita, Osaka 565-0871, Japan.

Abstract

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In general, twins have delayed language development early in childhood compared with singletons. The purpose of this study was to clarify the overall linguistic features of twins. A Japanese version of the Illinois Test of Psycholinguistic Abilities (ITPA) was administered in 24 twin pairs (aged 3 to 4 years) at their own homes. The overall language abilities of the twins were in the normal range (based on ITPA normative data: mean scale score 36.0 ± 6.0 points), and for the ITPA subtests only, Auditory Reception fell within the range of language disorder (mean scale score 24.9 ± 5.1 points). The findings suggest that in 3- to 4-year-old Japanese twins, overall language abilities are not delayed. However, there may be specific difficulties with auditory reception skills.

Type
Articles
Information
Twin Research and Human Genetics , Volume 9 , Issue 2 , 01 April 2006 , pp. 272 - 278
Copyright
Copyright © Cambridge University Press 2006