摘要：Lexical Vocabulary is the special ability of children to learn many things about words. The aim of this paper was to study specific aspects in the development of the language acquisition skills of Persian-speaking identical twins and compare them with fraternal twins and singletons. The test subjects were 109 children. In this paper, the main tests and their composite quotient in Test of Language Development (TOLD-3) [1] whose validity and reliability have already been verified by Iranian researchers are used. Three subtests; picture Vocabulary (understanding words), relational Vocabulary (Mediating vocabulary) and Oral Vocabulary (Defining words) were analyzed to assess understanding and meaningful use of spoken words in semantic skill. The statistical analysis of the data was done by using the SPSS software package, version 16. The results of the study show that no significant difference among semantic quotient scores exists for the three groups. The statistical significance of this test is P=0.536. The results of this research show that Persian-speaking twins, both identical and fraternal, are not at a greater risk of delayed development of language skills than singletons. This result is similar to results obtained in other countries.
其他摘要：Lexical Vocabulary is the special ability of children to learn many things about words. The aim of this paper was to study specific aspects in the development of the language acquisition skills of Persian-speaking identical twins and compare them with fraternal twins and singletons. The test subjects were 109 children. In this paper, the main tests and their composite quotient in Test of Language Development (TOLD-3) [1] whose validity and reliability have already been verified by Iranian researchers are used. Three subtests; picture Vocabulary (understanding words), relational Vocabulary (Mediating vocabulary) and Oral Vocabulary (Defining words) were analyzed to assess understanding and meaningful use of spoken words in semantic skill. The statistical analysis of the data was done by using the SPSS software package, version 16. The results of the study show that no significant difference among semantic quotient scores exists for the three groups. The statistical significance of this test is P=0.536. The results of this research show that Persian-speaking twins, both identical and fraternal, are not at a greater risk of delayed development of language skills than singletons. This result is similar to results obtained in other countries.
关键词：semantic quotient;identical twins;fraternal twins;singletons;Persian-speaking;test of language development (TOLD-3)
