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SUMMARY:BSU Seminar: &quot\;Nonparametric causal decomposition of group di
 sparities&quot\; - Ang Yu\, Hong Kong University of Science and Technology
DTSTART:20260413T130000Z
DTEND:20260413T140000Z
UID:TALK245878@talks.cam.ac.uk
CONTACT:Alison Quenault
DESCRIPTION:We introduce a new nonparametric causal decomposition approach
  that identifies the mechanisms by which a treatment variable contributes 
 to a group-based outcome disparity. Our approach distinguishes three mecha
 nisms: group differences in: (1) treatment prevalence\, (2) average treatm
 ent effects\, and (3) selection into treatment based on individual-level t
 reatment effects. Our approach reformulates classic Kitagawa–Blinder–O
 axaca decompositions in causal and nonparametric terms\, complements causa
 l mediation analysis by explaining group disparities instead of group effe
 cts\, and isolates conceptually distinct mechanisms conflated in recent ra
 ndom equalization decompositions. In contrast to all prior approaches\, ou
 r framework uniquely identifies differential selection into treatment as a
  novel disparity-generating mechanism. Our approach can be used for both t
 he retrospective causal explanation of disparities and the prospective pla
 nning of interventions to change disparities. We present both an unconditi
 onal and a conditional decomposition\, where the latter quantifies the con
 tributions of the treatment within levels of certain covariates. We develo
 p nonparametric estimators that are root-n-consistent\, asymptotically nor
 mal\, semiparametrically efficient\, and multiply robust. We apply our app
 roach to analyze the mechanisms by which college graduation causally contr
 ibutes to intergenerational income persistence (the disparity in adult inc
 ome between the children of high- vs. low-income parents). Empirically\, w
 e demonstrate a previously undiscovered role played by the new selection c
 omponent in intergenerational income persistence.
LOCATION:Large Downstairs Teaching Room\, East Forvie Building\, Forvie Si
 te Robinson Way Cambridge CB2 0SR.
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