Students in a school system with scores below 70 on a diagnostic test are required to attend an early morning math program .At the end of the year, researchers compared the math grades for these students with those of students who scored 70 or above on the initial diagnostic test, controlling statistically for diagnostic test score .This type of research uses
A)Propensity score matching
B)Instrumental variables
C)Regression discontinuity
D)Difference-in-differences

Question

Quizplus · Accepted Answer

This type of research uses Regression Discontinuity design, as it compares outcomes (math grades) on either side of a cutoff score (70) on the diagnostic test, controlling for that score.

Students in a School System with Scores Below 70 on a Diagnostic