Examines the historical changes in agreement patterns between Old Arabic and the New Arabic dialects to see whether they support Versteegh's radical hypothesis of pidginization, creolization, and decreolization. The conclusion is reached that the changes are chiefly because of processes of normal transmissions, "drift," and diffusion. (24…

For the linguist interested in typology and language universals, this paper suggests the usefulness of a taxonomy of copula and copula-like constructions in the world's languages and the elaboration of hypotheses of synchronic variation and diachronic change in this part of language. For the linguist interested in child language development, the…