Theory-based evaluation (TBE) is an evaluation method that shows how a program will work under certain conditions and has been supported as a viable, evidence-based option in cases where randomized trials or high-quality quasi-experiments are not feasible. Despite the model's widely accepted theoretical appeal there are few examples of its…

Little is known about effective eHealth recruitment methods. This paper presents recruitment challenges associated with enrolling African-American girls aged 8-10 years in an eHealth obesity prevention program, their effect on the recruitment plan, and potential implications for eHealth research. Although the initial recruitment strategy was…

Provides the conceptual framework for the Treatment Improvement Protocols (TIPs) evaluation project, using the diffusion of innovations theory as the theoretical foundation to understand and assess the development of TIPs. Summarizes principles of diffusion theory, and discusses how the model was used to structure the TIPs studies. (SLD)

Presents a framework to describe typical constraints that program evaluators face. The framework encompasses the usual evaluation costs and other factors that impede data collection or the implementation of strong evaluation designs. These are characterized as internal/substantive or external/political. (SLD)

This article describes the on-going evaluation of a pilot program characterized by: (1) cooperation between program managers and evaluators; (2) first-hand knowledge about the implementation of the pilot; and (3) a focus on summative and formative evaluations. Evaluators participated actively in the design of the pilot. (Author/SLD)