Singlets almost never correctly understand dissociative identity disorder based on their knowledge of multiple personality disorder - singlet conceptions of MPD are often very, very wrong. So Silver explains dissociative identity disorder from the ground up without relying on saying "DID is just the new name for MPD."

No pre-conceptions, no misconceptions. We're starting from 0 and getting to 100% understanding.

Skip to 1:46 to get straight to the explanation and skip the intro about singlet's misconceptions of MPD.

Edit: This video focuses primarily on alters, as that's what those without DID have the most trouble grasping! Obviously there's a lot more going on with DID/OSDD than just alters, but this is targeted as "introduction to the idea for singlets" so that's what I went with! :)
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