Content Validity of a Model for Assessing Expressive Language in Bulgarian Children Aged 4 to 6 years

Expressive language function has a definitive role in personality development. Tracing the chronology of the child's language development is one of the main starting points in the process of establishing signs of atypical development, as well as in establishing the first signs of peculiarities in the acquisition of learning skills. This necessitates the need for careful observation, research and assessment of preschool children's abilities for language expression. The aim of the study is, on the one hand, to create a model for evaluating the expressive language of Bulgarian children aged 4 to 6 years, and on the other - to study its content validity. The proposed model is constructed in accordance with the state educational requirements for training of preschool children in "Bulgarian language and literature", as well as in accordance with the expert opinion of specialists (university lecturers and practitioners). The model covers key aspects of language development, including semantics, morphology and syntax, and the results confirm its potential to be applied in practice.