[Kanner's classification of mutism]
childhood schizophrenia
infantile autism
idiocy mutism
deaf mutism
hysteric mutism
psychogenic mutism
The source of the classification is Leo Kanner's Child Psychiatry.
"Psychogenic mutism" is what is now called selective mutism.
Kanner's classification of mutism has been cited by Japanese literature on selective mutism. On the Internet, Wikipedia (Japanese edition) classifies mutism based on Kanner's classification.
http://ja.wikipedia.org/wiki/%E7%B7%98%E9%BB%99
But I've never seen the classification in English literature at present.
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Incidentally, according to Kanner's classification, where should these terms be classified into?
akinetic mutism
cerebellar mutism
Index of SM in Japan