Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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10

Transcribed Image Text:Consider an infinitely repeated game where players play the static Prisoner's Dilemma
game in table 1 each period.
Player 2
C
D
C x, x | 0, y
Player 1
D y, 0 1,1
Table 1: The Game
Suppose 1 < x < y. Players have discount factor, 8. Suppose both players follow a
grim trigger strategy. Find the conditions on d under which the strategies form a Nash
equilibrium and cooperation is sustained in all periods. (I.e., find a condition on the
player's patience such that players choose to cooperate in every period.)
How does d depend on x? What happens as x → 1 or x → y. What is the intuition
behind the results?
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