This article outlines a mixed methods approach to systems change evaluation and offers a case study of how this approach has been used to evaluate the development of system infrastructure supporting the implementation, spread, and sustainability of evidence-based home visiting projects. The...

This evaluation rigorously assessed the implementation and impact of a child care Quality Rating and Improvement System (QRIS) field test on child care quality as measured through child care quality observations and through ratings of a set of quality, education, and experience standards defined...

This article outlines a mixed methods approach to systems change evaluation and offers a case study of how this approach has been used to evaluate the development of system infrastructure supporting the implementation, spread, and sustainability of evidence-based home visiting projects. The...

Reports impacts for subgroups of children and parents in this sequence: African American, White, Hispanic, low risk, moderate risk, and highest risk.

Focuses on key design issues and methods relevant for understanding the substantive analyses.

For randomized controlled trials (RCTs) of education interventions, estimates of associations between student and mediating teacher practice outcomes can help examine the extent to which the data support the study's conceptual model. They can also identify mediators most associated with student...

This paper examines both theoretically and empirically whether using ordinary least squares (OLS) multivariate regression models to estimate average treatment effects under experimental designs is justified by the Neyman model for causal inference. The paper finds that estimated standard errors...

This article develops a new approach for calculating appropriate sample sizes for school-based randomized controlled trials (RCTs) with binary outcomes using logit models with and without baseline covariates. The theoretical analysis develops sample size formulas for clustered designs in which...