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Pairwise Imitation and Tournament Graphs

Sung‐Ha Hwang et al.

International Economic Review2026https://doi.org/10.1111/iere.70059article
AJG 4ABDC A*
Weight
0.50

Abstract

This paper investigates strategic dynamics under the behavioral rule of pairwise interact and imitate (PII), which requires minimal information and emphasizes outperforming opponents in pairwise interactions. We characterize PII using weak tournament graphs and, for a broad class of dynamics, establish a one‐shot stability result for stochastic stability. Applications include Cournot competition, strategic complements and substitutes, externalities, Nash demand games, and status‐seeking contests. The analysis highlights the competing roles of spite effects and perturbations in favoring relative success versus efficiency.

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https://doi.org/https://doi.org/10.1111/iere.70059

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@article{sung‐ha2026,
  title        = {{Pairwise Imitation and Tournament Graphs}},
  author       = {Sung‐Ha Hwang et al.},
  journal      = {International Economic Review},
  year         = {2026},
  doi          = {https://doi.org/https://doi.org/10.1111/iere.70059},
}

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Pairwise Imitation and Tournament Graphs

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Evidence weight

0.50

Balanced mode · F 0.40 / M 0.15 / V 0.05 / R 0.40

F · citation impact0.50 × 0.4 = 0.20
M · momentum0.50 × 0.15 = 0.07
V · venue signal0.50 × 0.05 = 0.03
R · text relevance †0.50 × 0.4 = 0.20

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