Question 1

What is imperfect competition in the context of IB DP Economics?

Accepted Answer

Imperfect competition refers to market structures that fall between perfect competition and monopoly. In IB DP Economics, it includes monopolistic competition and oligopoly, where firms have some market power to set prices, unlike in perfect competition. These structures are characterized by differentiated products, barriers to entry, and non-price competition.

Question 2

How does monopolistic competition differ from perfect competition in microeconomics?

Accepted Answer

In microeconomics, monopolistic competition differs from perfect competition primarily in product differentiation and market power. While perfect competition involves identical products and no control over prices, monopolistic competition features differentiated products, allowing firms some degree of price-setting power. This leads to a downward-sloping demand curve for individual firms, unlike the perfectly elastic demand in perfect competition.

Question 3

What are the key characteristics of an oligopoly in market structures?

Accepted Answer

An oligopoly is characterized by a small number of large firms dominating the market, significant barriers to entry, and interdependent decision-making. Firms in an oligopoly often engage in strategic behavior, such as collusion or price leadership, to maximize profits. This market structure can lead to non-price competition, where firms focus on advertising and product differentiation to gain market share.

Question 4

Why is non-price competition important in imperfect competition?

Accepted Answer

Non-price competition is crucial in imperfect competition because it allows firms to differentiate their products and build brand loyalty without altering prices. This includes strategies like advertising, product innovation, and customer service improvements. In markets like monopolistic competition and oligopoly, where price competition can lead to destructive price wars, non-price competition provides a way to attract and retain customers.

Question 5

How do barriers to entry affect market structures in imperfect competition?

Accepted Answer

Barriers to entry play a significant role in imperfect competition by limiting the number of firms in the market and allowing existing firms to maintain market power. These barriers can be natural, such as high startup costs, or artificial, like patents and government regulations. In oligopolies, high barriers to entry prevent new competitors from entering, sustaining the dominance of a few large firms and affecting market dynamics and pricing strategies.

Market Structure - Imperfect competition I

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