Eugen Bleuler, who named schizophrenia, held that its defining characteristic was a disorder of the thinking process. However, although the delusions and hallucinations of psychosis could also be considered as disorders of thought, the term "formal thought disorder" applies specifically to the presumed disruption in the flow of conscious verbal thought that is inferred from spoken language. This is typically what is referred to when the strictly less accurate, more commonly used but abbreviated term, 'thought disorder', is used.