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Publications

Methodology

When Is the Story in the Subgroups?

Strategies for Interpreting and Reporting Intervention Effects on Subgroups

November, 2010

This revised paper examines strategies for interpreting and reporting estimates of intervention effects for subgroups of a study sample. Specifically, the paper considers: why and how subgroup findings are important for applied research, the importance of prespecifying subgroups before analyses are conducted, and the importance of using existing theory and prior research to distinguish between subgroups for which study findings are confirmatory, as opposed to exploratory.

Methodology

Nine Lessons About Doing Evaluation Research

Howard Bloom’s Remarks on Accepting the Peter H. Rossi Award

November, 2010

In a speech before the Association for Public Policy Analysis and Management Conference on November 5, 2010, Howard Bloom, MDRC’s Chief Social Scientist, accepted the Peter H. Rossi Award for Contributions to the Theory or Practice of Program Evaluation.

Methodology

Finite Sample Bias from Instrumental Variables Analysis in Randomized Trials

August, 2010

This paper is the first step in a study of instrumental variables analysis with randomized trials to estimate the effects of settings on individuals. The goal of the study is to examine the strengths and weaknesses of the approach and present them in ways that are broadly accessible to applied quantitative social scientists.

Methodology

The Implications of Teacher Selection and Teacher Effects in Some Education Experiments

April, 2010

In some experimental evaluations of classroom- or school-level interventions, random assignment is conducted at the student level and the program is delivered at the higher level. This paper clarifies the correct causal interpretation of “program impacts” when this study design is used and discusses the implications and limitations of this research design. A real example is used to demonstrate the paper’s key points.

Methodology

Measuring the Impacts of Whole-School Reforms

Methodological Lessons from an Evaluation of Accelerated Schools

October, 2001
Methodology

Extending the Reach of Randomized Social Experiments

New Directions in Evaluations of American Welfare-to-Work and Employment Initiatives

October, 2001
Methodology

Modeling the Performance of Welfare-to-Work Programs

The Effects of Program Management and Services, Economic Environment, and Client Characteristics

July, 2001