The authors – participants of the seminar devoted to the “Comparative syntax of predicative expressions in Polish, French and Italian”, conducted by Stanisław Karolak in the 1970s – decided to suggest an extension of the PSPA concept of syntax (podstawowa struktura predykatowo-argumentowa – the basic predicativeargumentative structure). They selected the predicates of persuasion because they studied them during their work with Professor Karolak (consult the Bibliography). For this purpose, they developed the abstract predicative-argumentative structure for a greater class, thus nullifying the requirement of the identity of the root as well as the differences in the content of the particular predicates. Therefore we may say that it ...