This paper presents the results of: 1. measurements of selected parameters determining the rate of utterances, 2. comparative analyses of specific parameters in two study groups: physiologically ageing people, falling into the “old-old” category, and nine-year-old pupils with no developmental or language disorders.
When gathering the study material with the use of measurement tools (the Audacity program) and its statistical processing (tests: Shapiro–Wilk, Mann–Whitney, Fisher– Snadecor), the following parameters-indicators allowing the prediction of the speech tempo were taken into consideration and analysed: 1. basic: the average speaking rate (speech sounds, syllables + duration of pauses), the average articulation rate (speech sounds, syllables), the average share of pauses in utterances (number + percentage data); 2. supplementary: the average duration of all pauses, the average duration of proper pauses, the average duration of filled pauses, the average duration of partly filled pauses.
Popular studies of internal diversity of the Polish language mention the variant called biolect at times. The notion of biolect has covered variants of language depending on the user’s gender or age to this date. The author of this text proposes the term to be expanded by a variant of language characterised by various speech disorders. The suggested name of the variant is dyslect. The internal division of a dyslect is based on speech disorder classifications applied in speech therapy, i.e. dyslalia, stuttering, aphasia, dysarthria, oligophasia, schizophasia, dyslexia and dysgraphia.