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Direct linkFujisawa, Keiko K.; Todo, Naoya; Ando, Juko – Infant and Child Development, 2017
Executive functions (EF) are an important predictor of later adaptive development. A number of environmental influences, such as parenting, have been suggested as important promoters of EF development. However, behavioural genetic research has demonstrated that many environmental influences could be affected by genetic influences. Therefore, it is…
Descriptors: Genetics, Environmental Influences, Preschool Children, Correlation
Fujisawa, Keiko K.; Wadsworth, Sally J.; Kakihana, Shinichiro; Olson, Richard K.; DeFries, John C.; Byrne, Brian; Ando, Juko – Learning and Individual Differences, 2013
This first Japanese twin study of early literacy development investigated the extent to which genetic and environmental factors influence individual differences in prereading skills in 238 pairs of twins at 42 months of age. Twin pairs were individually tested on measures of phonological awareness, "kana" letter name/sound knowledge,…
Descriptors: Twins, Preschool Children, Emergent Literacy, Early Reading
Fujisawa, Keiko K.; Ozaki, Koken; Suzuki, Kunitake; Yamagata, Shinji; Kawahashi, Ikko; Ando, Juko – Developmental Science, 2012
Although growth in head circumference (HC) during infancy is known to predict later childhood outcomes, the mechanisms underlying this association with later sociocognitive abilities remain undetermined. Thus, using a sample of 241 pairs of normally developing Japanese twins, this study investigated the underpinnings of the association between HC…
Descriptors: Infants, Genetics, Environmental Influences, Human Body
Yamagata, Shinji; Takahashi, Yusuke; Ozaki, Koken; Fujisawa, Keiko K.; Nonaka, Koichi; Ando, Juko – Developmental Science, 2013
This twin study examined the bidirectional relationship between maternal parenting behaviors and children's peer problems that were not confounded by genetic and family environmental factors. Mothers of 259 monozygotic twin pairs reported parenting behaviors and peer problems when twins were 42 and 48 months. Path analyses on monozygotic twin…
Descriptors: Twins, Mothers, Child Rearing, Parenting Styles
Shikishima, Chizuru; Hiraishi, Kai; Yamagata, Shinji; Sugimoto, Yutaro; Takemura, Ryo; Ozaki, Koken; Okada, Mitsuhiro; Toda, Tatsushi; Ando, Juko – Intelligence, 2009
Using a behavioral genetic approach, we examined the validity of the hypothesis concerning the singularity of human general intelligence, the "g" theory, by analyzing data from two tests: the first consisted of 100 syllogism problems and the second a full-scale intelligence test. The participants were 448 Japanese young adult twins (167…
Descriptors: Intelligence, Twins, Asians, Young Adults
Shibata, Aki; Hitomi, Yoshiaki; Kambayashi, Yasuhiro; Hibino, Yuri; Yamazaki, Masami; Mitoma, Junko; Asakura, Hiroki; Hayashi, Koichi; Otaki, Naoto; Sagara, Takiko; Nakamura, Hiroyuki – Research in Autism Spectrum Disorders, 2013
Although autism is now recognized as being very common (Buie et al., 2010) and as developing due to not only genetic but also environmental factors, there is insufficient epidemiological evidence on the relationship between autism and allergy. In this study, therefore, we attempted to clarify the association of environmental factors with autism…
Descriptors: Young Children, Gender Differences, Smoking, Parent Influence
Shikishima, Chizuru; Yamagata, Shinji; Hiraishi, Kai; Sugimoto, Yutaro; Murayama, Kou; Ando, Juko – Intelligence, 2011
It has been reported that the ability to solve syllogisms is highly "g"-loaded. In the present study, using a self-administered shortened version of a syllogism-solving test, the "BAROCO Short," we examined whether robust findings generated by previous research regarding IQ scores were also applicable to "BAROCO…
Descriptors: Foreign Countries, Asians, Twins, Logical Thinking
Koyama, Tomonori; Kamio, Yoko; Inada, Naoko; Kurita, Hiroshi – Journal of Autism and Developmental Disorders, 2009
Using the Japanese version of the Wechsler Intelligence Scale for Children-Third Edition (WISC-III), 26 girls with high-functioning (IQ greater than or equal to 70) pervasive developmental disorders (HFPDD) (mean age, 8.2 years) were compared with 116 boys with HFPDD (mean age, 9.0 years). Compared with the boys, the girls scored significantly…
Descriptors: Intelligence Quotient, Females, Pervasive Developmental Disorders, Intelligence Tests
Zitzer-Comfort, Carol; Doyle, Teresa; Masataka, Nobuo; Korenberg, Julie; Bellugi, Ursula – Developmental Science, 2007
This study is concerned with ways in which children with Williams syndrome (WS), a rare neurodevelopmental disorder arising from a hemizygous deletion in chromosome band 7q11.23 including the gene for elastin (ELN) and approximately 20 surrounding genes, are affected by social mores of vastly differing cultures: the United States and Japan. WS…
Descriptors: Social Behavior, Genetics, Foreign Countries, Genetic Disorders
Peer reviewedAsada, Yukiko; Tsuzuki, Miho; Akiyama, Shiro; Macer, Nobuko Y.; Macer, Darryl R. J. – Journal of Moral Education, 1996
Summarizes the results of an International Bioethics Education Survey conducted in Australia, New Zealand, and Japan. Compares knowledge and teaching of 15 selected topics with particular emphasis on the teaching of social, ethical, and environmental issues of in vitro fertilization, prenatal diagnosis, biotechnology, nuclear power, pesticides,…
Descriptors: Bioethics, Biology, Biotechnology, Comparative Education
Hirokawa, Kumi; Kimura, Takashi; Ikehara, Satoyo; Honjo, Kaori; Ueda, Kimiko; Sato, Takuyo; Iso, Hiroyasu; Kishi, Reiko; Yaegashi, Nobuo; Hashimoto, Koichi; Mori, Chisato; Ito, Shuichi; Yamagata, Zentaro; Inadera, Hidekuni; Kamijima, Michihiro; Heike, Toshio; Iso, Hiroyasu; Shima, Masayuki; Kawai, Yasuaki; Suganuma, Narufumi; Kusuhara, Koichi; Katoh, Takahiko – Journal of Autism and Developmental Disorders, 2020
The purpose of the present study was to investigate associations of dietary intake including vitamin D, folate, and n-3 and n-6 polyunsaturated fatty acids (PUFA) in pregnant women with broad autism phenotype (BAP). The Japan Environment and Children's Study is a government-funded birth cohort study. All complete data of 92,011 were analyzed. The…
Descriptors: Eating Habits, Dietetics, Nutrition, Pregnancy
Tanaka, Miho; Kanehara, Akiko; Morishima, Ryo; Kumakura, Yousuke; Okouchi, Noriko; Nakajima, Naomi; Hamada, Junko; Ogawa, Tomoko; Tamune, Hidetaka; Nakahara, Mutsumi; Jinde, Seiichiro; Kano, Yukiko; Kasai, Kiyoto – Journal of Applied Research in Intellectual Disabilities, 2023
Background: The 22q11.2 deletion syndrome (22q11DS) is characterised by a changing pattern of overlapping intellectual, physical, and mental disabilities along the course of one's life. However, the impact of overlapping disorders (multimorbidity) on educational challenges remains unclear. Method: A survey was conducted with 88 caregivers of…
Descriptors: Foreign Countries, Genetic Disorders, Disabilities, Comorbidity
Dutton, Edward; Van der Linden, Dimitri; Madison, Guy – Journal of Creative Behavior, 2020
Previous research has attempted to understand why countries with relatively favorable conditions and high estimated average IQs (such as Finland and Japan) have a relatively low per capita number of scientific Nobel prizes. In the present study, we examine whether there is a relationship between national schizophrenia and left-handedness…
Descriptors: Intelligence Quotient, Gifted, Schizophrenia, Handedness
Miyagawa, Shigeru, Ed.; And Others – Papers in Linguistics, 1983
A volume combining two special issues of "Papers in Linguistics" contains 10 papers concerning Japanese language use and 12 concerning languages of the U.S.S.R. The papers on Japanese include: "Intrusion in Japanese Conversation,""Japanese Use of English Loans,""Some Discourse Principles and Lengthy Sentences in…
Descriptors: Discourse Analysis, Foreign Countries, Form Classes (Languages), Grammar
Download full textWoo, Jeong-Ho, Ed.; Lew, Hee-Chan, Ed.; Park, Kyo-Sik, Ed.; Seo, Dong-Yeop, Ed. – International Group for the Psychology of Mathematics Education, 2007
This fourth and final volume of the 31st annual proceedings of the International Group for the Psychology of Mathematics Education conference presents research reports for author surnames beginning Na- through Zod-. Reports include: (1) Mathematically Gifted Students' Problem Solving Approaches on Conditional Probability (GwiSoo Na, DaeHee Han,…
Descriptors: Mathematics Education, Teacher Characteristics, Academically Gifted, Semantics
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