Partners in Crime: Manipulating the Deferred Acceptance Algorithm through an Accomplice

  • Theodora Bendlin Rochester Institute of Technology
  • Hadi Hosseini Rochester Institute of Technology


We introduce a new manipulation strategy available to women in the men-proposing stable matching, called manipulation through an accomplice. In this strategy, a woman can team up with a potential male “accomplice” who manipulates on her behalf to obtain a better match for her. We investigate the stability of the matching obtained after this manipulation, provide an algorithm to compute such strategies, and show its benefit compared to single-woman manipulation strategies.

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