Behavioral Ecolog9 - Behavioral Ecology Evolutionarily...

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Behavioral Ecology Evolutionarily Stable Strategies In a two player game where both players have a choice of two strategies, we can calculate which is the best strategy, or the optimal frequency with which two play both strategies. In the four variations of the game pictured below, we have player 1 and player 2, each choosing between strategies A and B. Figure %: Evolutionarily Stable Strategies (ESS) By convention, the payoffs are shown for the player on the left side of the matrix. If both players choose strategy A, the payoff is Q. If both players choose strategy B, the payoff is T. If player 1 chooses strategy A and his opponent chooses strategy B, player 1's payoff is R. If player 1 chooses strategy B and his opponent chooses strategy A, player 1's payoff is S. Notice that in this last circumstance, player 2's payoff would be R, not S. Also note that though the name's for the payoffs remain the same, the value of those payoffs differe across the four variations. In the situation described on the left side of , payoff Q is better than payoff S, and payoff R is
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This note was uploaded on 01/27/2012 for the course BIOLOGY BSC1005 taught by Professor Rodriguez during the Winter '09 term at Broward College.

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Behavioral Ecolog9 - Behavioral Ecology Evolutionarily...

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