 Although Jakobson's book only gained influence in the Anglophone world following the publication of the translated version "Child language, Aphasia and Phonological Universals" in 1968  its impact was felt in the United States and the United Kingdom, among others, where changes of approach were adopted for phonological, grammar, semantic and other areas of language impairment.His observation that deviant sound patterns obeyed similar rules to those of regular language systems remains a guiding principle in clinical linguistics even today.Most notably, the same approach was also adopted by Crystal and his colleagues in their development of a set of language ‘profiling’ procedures.