An Analysis of Rounding Harmony in the Case of Typological View in Turkish Varieties of Razan, Tabriz, and Istambul Based on Optimality Theory

The present research is focused on the assessment of the efficiency of Optimality theory within Iranian (Razan and Tabriz) and Istanbul varieties of Turkish. The main research questions are as followed: 1. How much can the Optimality theory be effective in exploring the Turkish varieties? 2. Are there any typological differences in categorizing the varieties under consideration? If yes, how are they? The research results demonstrate that The Optimality theory in exploring rounding harmony in the varieties under consideration is very effective. For instance, it can realize the optimal form among the similar forms which are used in them by substituting restrictions. Despite the similarities observed within the syntactic, morphological, and other areas of the three varieties, within their typological area differences are detected, according to which the three systems can be classified in triple hypothetical categories of A, B, and C which can be proved within the tableaux of Optimality analysis.