The purpose of this study is to examine the effectiveness of a c-test in assessing the proficiency of learners studying Russian as a second or foreign language. A c-test is a type of language test where certain parts of words are removed, and participants are asked to fill in the blanks. This study will involve students learning Russian at various levels and native Russian speakers to determine the test's accuracy.

Participants will be asked to complete the c-test, which involves filling in missing parts of words in a text. This procedure helps to evaluate their language skills in Russian by challenging their ability to understand and use the language effectively.

• Who can participate: Eligible participants include students learning Russian at various proficiency levels and native Russian speakers. Participants should have a basic understanding of Russian to engage with the test effectively.
• Study details: Participants will complete a c-test that requires filling in missing parts of words to assess their language proficiency. This test helps determine how well participants understand and use Russian.