Accepted_test

The research is devoted to the study of siblings’ speech features in the context of a complex psychological and linguistic study. The aim of the work was to conduct a synchronous instrumental study of the results of the personality questionnaire and functional-dynamic speech complexes of speakers. The hypothesis of the research is an assumption that birth order influence on siblings’ speech more than any other factor (this thesis is based on the confirmation of its influence on speakers’ personality traits). The participants of the experiment are pairs of siblings. There were chosen pairs of brothers and pairs of sisters to reduce the number of controlling factors. Participants provided audio recordings of prepared and spontaneous speech.

A comprehensive study of implicit features of siblings’ speech required recourse to different types of analyses to handle different types of data. The design of the experiment included the questionnaire to characterize the personality traits of participants, the formant analysis to obtain frequencies of the informants’ speech, and multivariate covariance analysis, which was used to identify implicit connections between the results of the two aforementioned analysis methods. The pilot study showed that the commonality of phonological data for pairs of siblings is mostly explained by their personality traits, and the implicit factor with the highest weight in the system is birth order.