تفاوت‌های جنسیتی زبانی در به کارگیری دایرۀ واژگان فارسی در چهارچوب تکامل رشد ارتباطی: بررسی موردی در دو کودک دوقلو

The present research is a case study of gender differences of language usage in a pair of non-identical twins (a boy [Arsham] and a girl [Arshida]), performed on their using in Farsi Lexicon. The descriptive-analytic research is based on Mac-Arthur-Bates’s Communicative Development Inventories (CDI), according to which the twin’s lexicon has been divided into 22 categories, to which two extra categories are added. The language corpus is the twin’s recorded daily speech including 2535 words, categorized based on the framework. The frequency of each lexical group is evaluated throughout the research, together with the analysis of data accomplished by dependent T-test. The T-test results illustrated that there is a significant difference (p< 0.05) between the average of the twin’s usage only within the groups of 6, 10 and 16 as well as on their score of total scale (diagram 1 and table 26). This is while their average is near to each other in all other groups. Arsham’s average is higher than Arshida’s in any case of significant difference, showing his better doing in some groups. In the groups number 2 and 13, their doing and average is the same. Other similarities and differences in their lexicon can be summarized as follows: 1) Verbs in their lexicon have the highest frequency; 2) Abstract words have the least frequency; 3) Broadness and variety in the boy’s lexicon is more than the girl’s (of the whole corpus, 56.25% is devoted to the boy and 43.74% to the girl).