April 2016: Congratulations to Dr. Ozlem Tuba Koc on a successful defense of her PhD dissertation.

Posted On April 1, 2016

The final oral examination for the degree of Ph.D. in Business Administration was held on Friday, April 1, 2016 at the Institute of International Business of the Robinson College of Business.

Congratulations, Tuba! We wish you further success in your future endeavors!

Tuba Koc


 Tuba Koc’s Dissertation Committee

S. Tamer Cavusgil (Chair), Georgia State University

Denish Shah, Georgia State University

Sevgin Eroglu, Georgia State University

Daniel Bello, Georgia State University

Seyda Deligonul, St. John Fisher College

Dissertation Title

Longevity of Multinational Retail Enterprises in Foreign Markets: An Empirical Examination

Dissertation Overview

Although the market exit is a frequent aspect of international expansion, it has remained underexplored in the international marketing literature.  In this study, we seek to understand why many multinational retail enterprises (MREs), with capabilities beyond their ordinary counterparts, miscalculate their survival prospects in some of their host countries despite stellar successes elsewhere. Toward this end, our study addresses the question of what ensures MRE longevity in foreign markets.  Based on the organizational ecology theory, we develop hypotheses that predict the external and internal drivers of MRE longevity.  We compiled 224 exit and stay cases on a global scale. By employing the Cox Proportional Hazards model, we demonstrated the significance of international presence, internationalization tenure, internationalization scope, market share growth at home, and market share growth in the host country, network of stores in the host country, and retailer type in explaining the MRE longevity phenomenon. The results of this novel study have rich implications for advancing theoretical and managerial knowledge in international marketing and retailing.