This work is a comprehensive, authoratitive text on the history and development of nursing theory. This unique text should give students a firm foundation from which to analyse individual theories and make decisions about their application in the clinical setting. Features new to this edition include: chapters focused on individual nurse theorists have been reorganised into three units - philosophies of nursing, conceptual models or grand theories, and middle range theories; a new chapter has been added to describe Nola Pender's health belief model; all chapters have been updated to include theorists' most recent works and any changes in how their theories are used and accepted by the nursing community.