Article id : 10103 1496 View 0 Like 5 Comment Bookmark Print 1398/03/21 | 20:29:23 IRIS Digital Repository A digital repository of instruments and materials for research into second languages IRIS is a collection of instruments, materials, stimuli, and data coding and analysis tools used for research into second languages IRIS is a collection of instruments, materials, stimuli, and data coding and analysis tools used for research into second languages, including second and foreign language learning, multilingualism, language education, language use and processing. Materials are freely accessible and searchable, easy to upload (for contributions) and download (for use). https://www.iris-database.org/iris/app/home/index Tags : sample size sampling population calculator survey research Share article Short link Share into social network