But, you don t see mixes of levels. So, for example, phonological errors usually occur in syntactically correct sentences. Elements that interact come from similar environments. Beginnings change with beginnings, ends with ends, etc. 2. Elements that interact tend to be similar.
Consonants don t replace vowels.
Errors will have the same stress pattern as the thing they re replacing. Errors are Freudian slips. It s a way to look at what someone is really thinking. You have a lot of stuff going on in your unconscious, and some of it s bad and being repressed. But, repressed stuff sneaks out in production errors.