TY  - RPRT
        AU  - Bhalotra, Sonia R.
AU  - Clarke, Damian
        TI  - Analysis of Twins
        PY  - 2022/Sep/
        PB  - Institute of Labor Economics (IZA)
        CY  - Bonn
        T2  - IZA Discussion Paper
        IS  - 15609
        UR  - https://www.iza.org/publications/dp15609
        AB  - The occurrence of twin births has been widely used as a natural experiment. With a focus upon the use of twin births for identification of causal effects in economics, this chapter provides a critical review of methods and results.
        KW  - child penalty
KW  - women's labour market outcomes
KW  - birth spacing
KW  - fertility
KW  - child development
KW  - identification
KW  - twins
        ER  -