The English version of the SASE contains a total of 40 items: 20 for learner-learner interaction and 20 for learner-instructor interaction.
For more information: Alsudais, A. S., Alghamdi, A. S., Alharbi, A. A., Alshehri, A. A., Alzhrani, M. A., Keskin, S., Şahin, M. & Althubaiti, A. M. (2022). Social anxiety in E-Learning: Scale validation and socio-demographic correlation study. Education and Information Technologies, 1-13. https://doi.org/10.1007/s10639-022-10919-7
https://link.springer.com/article/10.1007/s10639-022-10919-7