Four early stages in the development of Li negation

No reasonably successful theory of the acquisition of negation seems to have yet been proposed. Most studies describe post hoc what has taken place; but they fail to go on to suggest a theory that will predict what will take place. McNeill seems to be the only one to have explicitly aimed at a theory with at least a certain amount of predictive capacity, but his views leave much to be desired. This paper outlines an alternative proposal to cover four very early stages for the acquisition of negation systems in natural languages. It emphasizes the formal linguistic devices as the major variables that determine the various language-specific developmental sequences.