Glossolalia as learned behavior

Glossolalia (or ‘speaking in unknown tongues’) has been judged to be a deviant form of human speech, motivated by religion and produced under certain psychological conditions. The latter have not yet been adequately specified, but the assumption seems to be that glossolalia is correlated with an abnormal state. It has even been suggested that it is a trance phenomenon and can be used to identify the occurrence of an altered state of consciousness