In: Statistics and Probability
Consider the following game: 3 players can contribute or not to
a public good. For the public good to be successfully created, 2
contributions are necessary (a third contribution would not add
anything to the public good).
These are the payoffs each of the three players assign to all
possible outcomes:
3: I didn't contribute but the public good was created anyway 2:
I did contribute and the public good was created
1: I didn't contribute and the public good was not created
0: I did contribute and the public good was not created
The decisions are made sequentially: player 1 moves, then player 2, then player 3.
(a) Find the set of pure strategy Nash equilibria of this game if it is played as a simultaneous move game.
(b) Find the set of subgame perfect Nash equilibria of this game when it is played sequentially.