Game-theoretic solution concepts imply that modifying a game by adding the same positive
or negative constant to all payoffs—a “change in payoff levels”—should not affect behavior.
Such a change does not affect any player's rank-ordering of outcomes, so pure-strategy best
responses, and hence pure-strategy Nash equilibria, are unaffected. Furthermore, it does
not affect expected-payoff differences under any given set of beliefs about opponents'
strategies, so best-response correspondences, and therefore mixed-strategy Nash …

Payoff levels, loss avoidance, and equilibrium selection in the Stag Hunt : an experimental
study | CiNii Research … Payoff levels, loss avoidance, and equilibrium selection in the
Stag Hunt : an experimental study … タイトル Payoff levels, loss avoidance, and equilibrium
selection in the Stag Hunt : an experimental study …