A trick to using malapropism is to ensure that the two words (the original and the substitute) sound similar enough for the reader to catch onto the intended switch and find humor in the result.
Positivism is a philosophical theory stating that positive knowledge is based on natural phenomena and their properties and relations. Thus, information derived from sensory experience, interpreted through reason and logic, forms the exclusive source of all authoritative knowledge.
Social positivism. In general terms, positivism rejected the Classical Theory's reliance on free will and sought to identify positive causes that determined the propensity for criminal behaviour. Rather than biological or psychological causes, this branch of the School identifies society as the cause.