Exploring the influence and application of Campbellian validity typology in the theory and practice of outcome evaluation, this volume addresses the strengths and weaknesses of this often controversial evaluation method and presents new perspectives for its use.

Editors Huey T. Chen, Stewart I. Donaldson and Melvin M. Mark provide a historical overview of the Campbellian typology adoption, contributions and criticism. Contributing authors propose strategies in developing a new perspective of validity typology for advancing validity in program evaluation including

1. Enhance...