What goes through mentally retarded peoples minds?

No.14200034 ViewReplyOriginalReport
Do we know what their minds work like from their perspective? Is it like seeing the world through the eyes of a child? If so, what causes them to exhibit “retarded” (clapping their hands on their heads, drooling, moaning) since this behavior isn’t seen in non-infant children?

Not talking about the typical downie like pic related, but actual helmet-wearing retards.