The thesis presents a new formalized approach to modeling associative fields of Ukrainian social and political lexis with the help of computer programme "STIMULUS" specially created for the research. This research supports psycholinguistic approach to the studied above mentioned lexis, applying free associative experiment method and computer modeling to forming and analysis of the associative fields. The study has two major purposes: 1) to investigate the denotative and connotative components of the associative meaning structure of the social and political lexis in Ukrainian; 2) to create a computer instrument for the associative experiment results analysis. The first chapter reveals the notions of the language world view, social and political lexis, psycholinguistic meaning, associative field. The results prove that social and political lexis is a dynamic fragment of the Ukrainian world view and its psycholinguistic meaning can be analyzed through the creation of associative fields. The second chapter is devoted to the investigating the free associative experiment for the research of the lexical units via psycholinguistic approach. The free associative experiment held on social and political lexis with 1000 Ukrainian male and female students aged 17 - 22 has been described. This experiment aimed at creating 100 associative fields of above mentioned lexical units to be structuralized with the help of computer instrument "STIMULUS". In the third chapter the computer information and analytical system for the processing the associative experiment results "STIMULUS" has been given. This system was specially created within the research for studying the denotative and connotative components of the psycholinguistic meaning both of stimulus and the world view fragment on the whole. The "STIMULUS" 20 parameters are realized via visual aids for perfect data presentation. The "STIMULUS" functional and operational capability can be used in linguistics and non-linguistic sciences such as psycholinguistics, cognitive linguistics, sociology, political science, marketing etc. In the fourth chapter the focus is on the creating and structuralizing the 100 associative fields of the social and political lexis via "STIMULUS". Specific features of the fields and associative links "stimulus - response" has been given. As a result of statistical measuring of each associative field's structural component, the field's core and periphery, specific actualized meaning zones, types of associative links "stimulus - response", connotative structures and their dynamic types were elicited and described. The specificity of the Ukrainian social and political associative fields is found to be a great number of "deny"- responses (57 % stimuli contain "deny"-response in the core). The lexical and associative meaning structures are mutually complementary and interact in core (1- 20 % of the total associative field) and periphery zones; associative structure is larger than lexical one by 12 - 67 %. The types of the associative links "stimulus - response" are high-productive (syntagmatic - 34 - 86 % in each field; thematic - 23 - 84 %, emotional - 2,8 - 67 %), medium-productive (names - 0,2 - 43 %; paradigmatic - 0,3 - 41 %; verbal complex - 4 - 32 % etc.) and low-productive (word building - 0,2 - 8,9 %; translated - 0,2 - 5,6 %; integrated - 0,3 - 5,5 %; phonetic - 0,2 - 5 %; iconic - 0,3 - 3%; grammatical - 0,3 - 1,7 %). The connotative structures with the positive and negative shifts and 5 types of connotative dynamics (stable, growing, declining and fluctuating up and down) has been revealed. The Ukrainian language world view conceptual core (notions Ukraine, money, nation, liberty, law etc.) and visual connotative areas on lexical groups were formed to show the Ukrainians' psycholinguistic values.
