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.


Welcome to the New!

September 19, 2012 08:12 AM

While we've been working on the site for a long time, it feels as though the design and launch process happened overnight. Our entire staff worked tirelessly to make sure that the new site is functional, easy to navigate, and anticipatory of the information you need from us.

A couple of highlights:

  • Streamlined navigation. Gone is the very long left hand navigation bar, with every button known to man making the list ever longer. Navigation is relegated to the top of the site, with easy submenus divided by topic area. Don’t know where something is? Use the search bar to find it!
  • JPAM front and center. We’ve made APPAM’s journal a focal point of the new site. We’ll be featuring a synopsis of each issue and web-only Point/Counterpoint pieces in the future.
  • Links to public policy news you can use. While we will continue to highlight APPAM news, we also want to bring you up to speed on all the news affecting the field of public policy. You can find that under Public Policy News; you can also submit news items you feel are important for your colleagues by dropping us an email or notifying us through social media.

We hope you like the site as much as we do. And the site is not the only thing APPAM is debuting. You’ve probably noticed the Twitter feed module on the front page and our increasingly active Facebook and LinkedIn pages. We want to stay connected with you, even when you’re not on

Finally--and most importantly--we want to highlight YOU! Doing some interesting research? Got a promotion? Send it to us at APPAM Member News will be a regular feature of the site and we need you to feed it.
Thank you for your continued support of APPAM. We wouldn’t be able to do any of the things we do if we didn’t have the support of our membership. If you have any feedback on the new site, send it our way.
Take care and I look forward to seeing many of you in Baltimore in November!






Tara Sheehan, APPAM Executive Director


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