This thesis explores how the Turkish democratization has been affected by conservative parties during the historical process. In addition, it provides information about the democratization experience of Turkey. Furthermore, it reveals the difference of Turkish democracy from that of other democratic countries. How Turkey went through interrupted periods of democratization experience in these periods, and gains and losses as a result of these periods were addressed in this thesis separately. The analysis and evaluations were conducted through the interviews with persons, who have a say in the political history of Turkey. / 博士(グローバル社会研究) / Doctor of Philosophy in Global Society Studies / 同志社大学 / Doshisha University