Dynamics of Multi-Stage Screening

David Lagziel and Ehud Lehrer

Economic Modelling, 2025, vol. 151, issue C

Abstract: This study explores dynamic screening problems in which elements undergo noisy evaluations. Some elements are discarded at each stage, while the remainder are re-evaluated independently in subsequent stages. We demonstrate that, ceteris paribus, the quality of a screening process may not improve as the number of stages increases. Specifically, we examine the resulting elements’ values and demonstrate that adding a single stage to a screening process may produce inferior results in terms of stochastic dominance, while increasing the number of stages substantially leads to a first-best outcome.

Keywords: Dynamic screening; Perfect screening; Threshold strategies (search for similar items in EconPapers)
JEL-codes: C70 D49 D81 (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:ecmode:v:151:y:2025:i:c:s0264999325001993

DOI: 10.1016/j.econmod.2025.107204

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