Online ISSN: 2455-7188 IMPACT FACTOR: 0.7261 Thomson Reuters Researcher ID: J-5005-2016 CERTIFICATE OF PUBLICATION This is to Certify that Mr./Mrs./Ms./Dr. L.Sreelekha, V.Gokul, K.Kowsalya has published research paper in " INTERNATIONAL JOURNAL OF INNOVATIVE RESEARCH IN MANAGEMENT STUDIES (IJIRMS) peer reviewed and refereed journal, Volume- 2, Issue- 11, December 2017, pp. 13-19." Paper Title:- " A STUDY ON PSYCHOLOGICAL THEORIES OF MOTIVATION FOR INCREASING PRODUCTIVITY IN AN ORGANISATION AND ITS EFFECTIVENESS ON MANAGEMENT " Chief Editor