Factor structure of assertity questionnaire
The authors made an attempt to reduce the number of items on the A26 questionnaire by improving the factor structure of the assertiveness questionnaire. Thepreviously carried out development of a reliable and valid Russian-language assertiveness questionnaire A26 made it possible to obtain a large number of results, including partially repeating foreign ones, but also showing significant differences in the properties of assertion among Russian-speaking research participants. Questionnaire A26 includes 26 questions aimed at finding out how a person behaves in relation to others, to friends, close people and how he reacts to various life situations. Correlation and factor (exploratory and confirmatory) analyses of the original version of the A26 questionnaire and its version A23, reduced to 23 items, were carried out. Thefactorial models of the A26 and A23 questionnaires are presented and analysed. Both of them contain factor 1 «confidence» and factor 2 «determination», which include all items of A23, but in A26 there are two items that are not included in any of the factors. Model A23 is more strongly associated with the indicated factors of assertiveness, as well as with the most reliable correlates of assertiveness: strategies of behaviour in conflict, life satisfaction (positive connection) and shyness (negative connection). At the same time, A23 has better uniformity and discrimination than A26. Thecorrelation between A26 and A23 is 0.988. We obtained a reduced to 23 items version (A23) of the assertiveness questionnaire with the best psychometric properties, which meets the main criteria of reliability and validity. Thearticle contains the full (A26) and abbreviated (A23) versions of the assertiveness questionnaire.