22. Consider the same set up as in the previous exercise but now consider the case of incomplete information in which v is private information for B which can take two values, either vH or VL such that VH > VL- Suppose Pr (v = v#) = 0 E (0, 1) and Pr (v= v1) = 1 – 0 which is common knowledge for B and S. The strategic situation is represented below where S does not know if the game being played is the left matrix (which arises if B's type is vH) or the right matrix (which arises if B's type is v1). To simplify matters suppose Pm = PL in the case in which a B type offers PH and S demands Pr. PH PL PH PL VL – PL,0 VL – PL,0 (1) VH – PL,0 Vн — PL,0 PH VH – PH, PH PH VL - PH, PH - c - C PL 0, -c PL VH VL Determine the best responses for each type of B in the matrices in (1) given that B does know а. if she is either vH or vL. Then find the expected profit for each of S's strategies, for choosing PH or PL, given that S foresees the best responses of each type of B. Then compare the two expected profits in order to find the optimal choice of S. Determine the set of pure strategy Bayesian Nash (BN) equilibria for the incomplete information game given that v# > PH > PL = c> VL. b. Find the normal form representation payoff matrix using expected utility for both B and S where 0 € (0, 1) is assumed to be common knowledge. (Hint: B has two types where the strategy for both types can be labeled PHH, PHL, PLH and PLL; PHL means that B type vH chooses PH while B type vL chooses PL; this means row player B has four strategies while the column player has only two).
22. Consider the same set up as in the previous exercise but now consider the case of incomplete information in which v is private information for B which can take two values, either vH or VL such that VH > VL- Suppose Pr (v = v#) = 0 E (0, 1) and Pr (v= v1) = 1 – 0 which is common knowledge for B and S. The strategic situation is represented below where S does not know if the game being played is the left matrix (which arises if B's type is vH) or the right matrix (which arises if B's type is v1). To simplify matters suppose Pm = PL in the case in which a B type offers PH and S demands Pr. PH PL PH PL VL – PL,0 VL – PL,0 (1) VH – PL,0 Vн — PL,0 PH VH – PH, PH PH VL - PH, PH - c - C PL 0, -c PL VH VL Determine the best responses for each type of B in the matrices in (1) given that B does know а. if she is either vH or vL. Then find the expected profit for each of S's strategies, for choosing PH or PL, given that S foresees the best responses of each type of B. Then compare the two expected profits in order to find the optimal choice of S. Determine the set of pure strategy Bayesian Nash (BN) equilibria for the incomplete information game given that v# > PH > PL = c> VL. b. Find the normal form representation payoff matrix using expected utility for both B and S where 0 € (0, 1) is assumed to be common knowledge. (Hint: B has two types where the strategy for both types can be labeled PHH, PHL, PLH and PLL; PHL means that B type vH chooses PH while B type vL chooses PL; this means row player B has four strategies while the column player has only two).
Chapter16: Labor Markets
Section: Chapter Questions
Problem 16.9P
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