As the field of tourism and hospitality experiences maturity and scientific sophistication, researchers need to fully understand the breadth and depth of existing scales that help explain, understand, monitor, and predict not only behavior but also consequences of such behavior as a function of demand and supply interactions in the field. By introducing the importance of measurement and scales and providing groupings of existing scales, serves as the state-of-the-art reference book in the field of tourism, hospitality and allied fields such leisure, recreation, and services management.