[1] Dehejia and Wahba (1999) later demonstrated that non-experimental methods performed better when using propensity score methods to choose a more closely matched comparison group. (educationnext.org)
Instead of funding a national network of 10 regional education labs, suppose those funds were made available on a competitive basis to individual state agencies willing to help districts track the impacts of their own efforts, to identify matched comparison groups for their initiatives (using other students and schools in a state) and to generate reports on impacts. (educationnext.org)
Type of Study: Posttest with long - term follow - up and matched comparison group Number of Participants: 26 (cebc4cw.org)