11. Types of speech errors include : exchange errors, perseveration, anticipation, shift, substitution, blends, additions, and deletions. 12. The study of speech errors contributes to the establishment / refinement of models of speech production. 13. This is why it is usually possible to splice out speech errors in the broadcast business. 14. His theory was rejected because only a minority of speech errors were explainable by his theory. 15. Speech errors of the type you described are responsible for creating every word in every human language.16. Some clues to discrepant emotions may be vocal _ shifts in pitch, for example, speech errors or pauses. 17. This approach was deficit-focused, in the sense that speech errors were thought to arise randomly and should be corrected. 18. This category contains speech errors or categories of speech error that have been studied and reported in reliable sources. 19. Speech errors are common among children, who have yet to refine their speech, and can frequently continue into adulthood.20. This category contains speech errors or categories of speech error that have been studied and reported in reliable sources.