Due to the wide variety of research methods on autism, the author sees the need for in- depth methodological reflection before planning own research on semantic and lexical competences in children with autism. For this purpose, using the method of the traditional literautre review she aims to discuss some theoretical problems and formulate conclusions for her own research. Con-cludes that studying linguistic competence in autism requires intensive conceptual work, including in-depth methodological reflection; practical skills within research methods and epistemological awareness. In the final part, she outlines a plan to investigating verb comprehension in autistic children.

The author presents the dilemmas, doubts and necessary decisions that she had to face when designing the research on the efficacy of dyslalia therapy. The presentation is a voice in the discussion on the methodology of research in speech therapy. The issues presented below are as follows: considerations on the definition of the concept of dyslalia therapy effectiveness, selected research problems and research results. The author also points to the limitations of the query.