Most students entering public health take their first research methods course during the first year of their program. This book is ideal for faculty and students in research methods courses in health education/health behavior and social and behavioral sciences. As a text, the book covers the major measurement topics, such as measurement theory, types of measures, measurement error, creating surveys and tests, reliability, and validity assessment. The book is also ideal for professional researchers in public health, nursing, medicine, and social sciences. The book addresses the practical issues related to the development of measures of health behavior, and provides information on how to conduct the reliability and validity tests using leading software packages such as SPSS. Competing books too often treat the measurement issue too generically, whereas those which are more specific to psychometric theory are too arcane for the beginning student in the field. Avoiding these hazards, this book strikes the needed balance, with a focus on health behavior and an applied approach to psychometric theory.