The most restrictive Creative Commons (CC) license is the “Attribution-NonCommercial-NoDerivatives” (CC BY-NC-ND) license.
This license is the most restrictive of the six (6) main CC licenses and only allows users to download the materials and share them with others as long as they credit the author. However, users are not permitted to change the materials in any way or use them commercially.
Why would an author choose a restrictive CC licence?
If you don’t want other authors to change your content in any way or use it for commercial purposes, the CC BY-NC-ND license is the ideal choice. It still provides benefits to other users of your content, such being able to download your content and share them with others, as long as they give credit to you (attribution).
Note, however, that materials published under this license (CC BY-NC-ND) are not considered to be OER, because OER by definition should empower users to adapt and remix the content to contextualize it to their needs.
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