TY  - RPRT
        AU  - Attar, Itay
AU  - Cohen-Zada, Danny
AU  - Elder, Todd E.
        TI  - Measuring and Correcting Monotonicity Bias: The Case of School Entrance Age Effects
        PY  - 2024/Jun/
        PB  - Institute of Labor Economics (IZA)
        CY  - Bonn
        T2  - IZA Discussion Paper
        IS  - 17088
        UR  - https://www.iza.org/index.php/publications/dp17088
        AB  - Instrumental variables estimators typically must satisfy monotonicity conditions to be interpretable as capturing local average treatment effects. Building on previous research that suggests monotonicity is unlikely to hold in the context of school entrance age effects, we develop an approach for identifying the magnitude of the resulting bias. We also assess the impact on monotonicity bias of bandwidth selection in regression discontinuity (RD) designs, finding that "full sample" instrumental variables estimators may outperform RD in many cases. We argue that our approaches are applicable more broadly to numerous settings in which monotonicity is likely to fail.
        KW  - monotonicity
KW  - selection
KW  - entrance age
KW  - regression discontinuity
KW  - instrumental variable
        ER  -