Wednesday, March 14, 2018

The Internal and External Validity of the Regression Discontinuity Design: A Meta-Analysis of 15 Within-Study-Comparisons | JPAM Featured Article

Regression discontinuity (RD) is generally acknowledged as the most rigorous non-experimental method for obtaining internally valid impact estimates. The study tests the efficacy of RD by comparing RD causal estimates at the treatment cutoff to those from Randomized Control Trials also estimated at this same cutoff. The study identifies 15 previously completed within-study-comparisons that explicitly examined this issue by assuming the RCT results are unbiased and comparing them to RD results.


Learning About Infant and Toddler Early Education Services (LITES) Call for Studies

February 5, 2014 09:30 AM

Mathematica Policy Research seeks studies for a review that will assess the evidence base of out-of-home early care and education (ECE) models for infants and toddlers (from birth to age 3). The review is being conducted by Mathematica for the Office of the Assistant Secretary for Planning and Evaluation (ASPE), in partnership with the Office of Planning, Research & Evaluation (OPRE) within the U.S. Department of Health and Human Services. It will be used to help inform policy, new initiatives, and program directions at the federal level.

For more information, a description of the types of studies we are interested in receiving, and instructions for submitting studies, please see the attached Call for Studies. We invite you to share this message with others you think would be interested in receiving the Call for Studies.

Submissions are due March 11, 2014, and should be e-mailed to

If you have any questions about the Call for Studies, please contact Lauren Murphy at or (609) 275-2201.


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