This second edition of theEncyclopedia of Nursing Research(ENR), like the first, is a comprehensive, yet concise and authoritative guide to existing nursing research literature. It charts the course of nursing research since 1983 when the first edition of theAnnual Review of Nursing Research(ARNR) was published. The original edition of ENR, published in 1998, grew from a long-standing commitment of the publisher, Dr. Ursula Springer, to the field of nursing, and my commitment to nurse
scholars around the globe. The original encyclopedia followed 15 years of publication of the ARNR series. This second edition of ENR follows publication of 22 volumes of ARNR and incorporates the research topics included in the ARNR series. Through these formative years of nursing science, I have had the privilege of serving as editor of the ARNR series and witnessing the rapid growth of knowledge and expertise in nursing research. Having served as editor for the first edition of ENR, I am joined in this edition by Meredith Wallace, the Associate Editor. Nurse researchers and graduate students in nursing will be the primary audience for this
edition of ENR.