Grounded theory methodology offers a practical approach to researching problems of significance to nursing practice. In the years since its introduction, grounded theory has transformed social science research and in the process has undergone its own evolution. The manifestations of this evolution have been the subject of much contention and debate, that could result in some confusion for the novice researcher and continued disputation over what constitutes grounded theory research. In a series of two articles, insights are offered into these evolutionary processes, untangling the complexities, making grounded theory user-friendly rather than convoluted. In part one, the authors present a discussion of the theoretical and philosophical foun...