It is my great pleasure to acknowledge my indebtedness to people for their help and assistance in the preparation of my thesis. To my supervisor, Prof. (Dr.) Gandharva Joshi, (Dept. of Psychology, Saurashtra University, Gujarat), I owe a profound debt of gratitude for his help, guidance and of course encouragement throughout the period of my research. At every stage of my research he has been a source of inspiration, strength and continued support with his vast knowledge and wide understanding. Prof. (Dr.) Suresh Ghai, Director General –K. J. Somaiya Institute of Management Studies and Research (SIMSR) has always inspired me and took keen interest in the quality of my research. He has always been willing to help me in all possible ways. I am indebted to Prof. (Dr.) Satish Ailawadi, Director- SIMSR who is a guiding force in my research activities. Prof. P.V. Narsimham, Professor Emeritus, SIMSR has always been supportive and helpful in my research. I am really very happy to express my sincere thanks and gratefulness to my senior colleagues at SIMSR for their valuable suggestions in the course of my study. I am grateful to my friends and colleagues at SIMSR for their valuable discussions and deliberations during the course of my research. My sincere thanks are also due to my students for their assistance in several ways. My classroom discussions with them proved both informative and helpful. My thanks are also due to the staff of SIMSR My father Prof. (Dr.) D. D Sharma, former Pro Vice Chancellor , University of Lucknow has always stood behind me in all my academic activities and has proved to be a solid support in times of difficulties. My mother Late Mrs. Dayamoyee Sharma always provided all help and encouragement towards my educational development. Frankly, I could not have completed this project without the active support, help and encouragement from my husband Mr. Shashi S Kumar. A research project of this kind has inevitably to undergo several phases of hardships and in all those phases my husband proved a pillar of strength and kept goading me to achieve my goal. My brother in law, Prof. (Dr.) S. P. Singh, Head-Dept. of Bio- Sciences, Saurashtra University, Gujarat & my sister Dr. Aneeta Singh constantly encouraged and provided all the necessary help in the pursuit of my Ph. D research. In fact, they have been stimulating force behind my research activity. I am sincerely thankful to my brother Dr.