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Extreme form of imperfect competition
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Monopoly
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When many sellers compete to sell a differentiated product, entry not restricted
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monopolistic competition
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Due to large number of firms, no individual firm considers its rivals reaction when setting price or quantity
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monopolistic competition & perfect competition
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Monopolistic Competition: Each firm sells a differentiated product and faces a _______________ sloping demand curve
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downward
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Monopolistic competition has a __________ D Curve
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downward sloping
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Both __________ + __________ have downward sloping demand curve
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Monopoly and monopolistic competition
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Monopolistic competition, in short run, maximize costs at
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MC = MR
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Monoploistic Competition: in long run we have MC = MR and P = _____
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AC
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Two sources of inefficiency arise in monopolistic competition
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1. price exceeds MC
2. each firm has excess capacity that it's not utiliziing
2. each firm has excess capacity that it's not utiliziing
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Focuses on behavior of large firms in markets where there are only a few firms that account for most of the market
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Oligopoly
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Most important rule of Oligopoly
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interdependence of firms
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_______________ must consider rivals short-term and long-term reactions to any change in strategy
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Oligopoly
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Non-cooperative Oligopoly behavior
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Cournot, Stackleberg and Bertrand
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Each firm does the best it can, given what its competitors are doing
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Nash Equilibrium
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Cournot, Stackleberg and Bertrand starts with different assumption about what the firm assumes, but they all apply the ___________ concept
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Nash Equilibrium
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_____________ model -- firms compete by choosing quantities, and all firms make decisions at the same time
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Cournot
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The ________________ for each firm shows how much it will produce as a function of how much it thinks its rival will produce.
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Reaction curve
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Cournot equilibrium occurs at the intersection of
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two reaction curves
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________________ equilibrium: total output level is less than perfect competition, but more than pure monopoly
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Cournot
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_____________ model: firms compete by choosing quantity, but one firm is able to choose first.
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Stackelberg
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Stackelberg, ____________ sets output quantity first, and _________ observes output
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leader , follower
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Being leader gives "first-mover advantage" and leader will produce __________ than follower and earn _______________ profit
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more, higher profit
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____________ Model: model of price competition
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Bertrand
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Each firm must decide which price to set, treating the price of its competitor as fixed.
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Bertrand
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Bertrand: with homogenous products, _______________ is the competitive outcome.
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Nash Equilibrium
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With differentiated products, the equilibrium Bertrand price will be _____________ than under perfect competition but ____________ than under pure monopoly.
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greater, less
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______________ Can be used to illustrate the basic features of a noncooperative game
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Game theory
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_______________ shows the profit to each firm, given its decision and the decision of its rival
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payoff matrix
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Each firm independently does the best it can, taking competitors into account
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Prisoner's Dilemma
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Each firm, trying to maximize profits, will compete aggressively, but both firms would be better off if they cooperated
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Prisoner's dilemma
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In a one-shot game, the competitive outcome will always be the ______________ of the game b/c there is no change of future punishment
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equilibrium
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Explicit agreement between firms to coordinate their activities with the goal of raising price above the competitive level
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Cartel
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Cartel profit maximized where
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cartel MR = cartel MC
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Many firms, no barriers to entry, product differentiation
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monopolistic competition
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___________ is crucial for monopolistic competition
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differentiation
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In a monopolistically competitive market, Price exceeds
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MC
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__________ created in monopolistically competitive market because of markup of price over marginal cost and less output is produced than under perfect competition
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DWL
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Monopolistically competitive firm is inefficient because of
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excess capacity -- output is to the left of minimum ATC
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Oligopoly can arise if ____________________ prevent new firms from entering
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barriers to entry
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Must consider its rivals when making decisions
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oligopoly
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Basic concept for analyzing strategic behavior in Oligopoly is ___________
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Nash Equilibrium
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In __________________ no firm has an incentive to change its action
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Nash Equilibrium
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_____________ each firm must decide how much to produce and the firms make their decisions at the same time.
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Cournot model
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Neither firm can gain by producing a different quantity, given the rival's choice
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Nash Eq
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Total output in Cournot equilibrium lies between
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monopoly and competitive
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First move advantage, aka
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Stackelberg
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Simultaneous output choice
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Cournot
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Firms move sequentially, leader and follower
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Stackelberg
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In Cournot model, firms choose _________________ levels and let the market determine the ______________
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output, price
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Firms are competing by choosing price rather than quantity
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Bertrand
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When two identical firms compete on price, the competitive price is the _______________ price
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equilibrium
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With homogenous products, the Bertrand equilibrium is the competitive equilibrium where p=
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MC
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With differentiated products, price > ________, but are less than what a monopoly would charge
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MC
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Kinked demand curve suggests that rivals will match
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price cuts
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For a cartel to achieve goal, output must be restricted below
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competitive level