Economics • Economic BasicsHard
In game theory, what is a 'subgame perfect equilibrium' (SPE) designed to eliminate?
A. Uncredible threats and empty promises in dynamic games✓ Correct Answer
B. Strictly dominated strategies in static simultaneous games
C. Collusive pricing behavior in oligopoly markets
D. Information asymmetry in adverse selection models
💡 Solution & Explanation
A subgame perfect equilibrium is a refinement of the Nash equilibrium used in dynamic game theory to discard strategies that involve uncredible threats or empty promises at future decision nodes. It ensures that players act optimally not just at the start, but at every possible subgame throughout the extensive form game. This concept is a cornerstone of advanced economic theory and strategic decision-making models.
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