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. Take male subjects and put them in a room with a scantily clad female experimenter. Errors like saying fine body instead of bine foddy when reading out loud under time pressure indicate that errors are based on impulses from the Id. 2.