Regression Discontinuity - Institute for Policy Research
Regression Discontinuity - Institute for Policy Research
Regression Discontinuity - Institute for Policy Research
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Two Methods For Generalization To<br />
Assignment Variable Populations<br />
• Extrapolate using only functional <strong>for</strong>m<br />
assumptions. This has obvious limitations and<br />
is universally disapproved<br />
Extrapolate using both functional <strong>for</strong>m<br />
assumptions and a comparison RD function with<br />
no treated units -- what we now examine.<br />
Several different RD comparison functions are<br />
possible, including a pretest and an independent<br />
comparison group. Our example uses pretest