This book provides researchers, evaluators, and graduate students with a user-friendly presentation of Campbell's essential work (including his thoughts on some of his classic works) in social experimentation.

This essential work in social measurement includes: arguments as to why qualitative approaches belong with quantitative ones; a debate with deconstructionists and social constructionists on measurement validity, and an expansion and further explanation of the multitrait-multimethod matrix.

This essential work in social measurement includes: arguments as to why qualitative approaches belong with quantitative ones; a debate with deconstructionists and social constructionists on measurement validity, and an expansion and further explanation of the multitrait-multimethod matrix.

This book presents an historical overview of heroin use in the USA, as well as articles by experts in the field which focus on current developments and emerging trends in prevention, treatment, distribution and consumption. Filling a void in the literature on what is known about the 'new' heroin users, this volume also updates the reader on the status of ageing heroin-addicted populations who initiated use of the drug prior to the 'age of cocaine'.