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The present pilot study was the adaption of receptive and expressive language tests' (ROWPVT and EOWPVT) for Greek children aged from 12 years till 14 years and 11 months, and to locate any differences between receptive and expressive language.
The commercial versions of the tests were adapted in Greek language by a linguist, three speech language therapists and 2 native speakers of Greek language, having proficiency in English, and two native speakers of English having proficiency in Greek, and changes were contacted, for the best representation of the Greek version. In this research took part 300 participants (m: 150, f: 150) recruited from Greek Junior High Schools at region of Epirus. The sample was independent from origin and socio - economic situations. Children with medical problems excluded, because it will influence the test results.
Statistical analysis of the data revealed that the results obtained are generally consistent to other results reported. No statistically significant differences were found according to sex. Also reliability and validity test were contacted and showed high criterion (a - Chronbach = .848, & .812).
The test appears to be sensitive for junior high school aged Greek population and presents satisfactory criterion, internal consistency, temporal stability, interrater reliability, high content validity. The participants demonstrated clear patterns of responses and there were no differences between expressive and receptive language.