Econ 4.6 Reading Questions, 2025-26

Firms in monopolistic competition behave like monopolists in the short run but adjust differently in the long run.
a. Define what is meant by "zero-profit equilibrium" in the context of monopolistic competition.
b. Describe how the presence of profits or losses in the short run leads to changes in the number of firms in the industry.
c. Explain how this adjustment process leads the industry to long-run equilibrium.

Compare the firm behavior in monopolistic competition to that in perfect competition using the reading.
a. Identify a key similarity in the long-run outcome for both types of market structures.
b. Explain how the firms' production positions on the average total cost curve differ between the two structures.
c. Analyze why these differences matter when evaluating productive efficiency.

Imagine you are explaining monopolistic competition to a friend who thinks it’s just a form of monopoly.
a. Use the text's description to define both "monopolistic competition" and "monopoly."
b. Provide two key differences in firm behavior or outcomes between the two market types.
c. Reflect on whether monopolistic competition offers more consumer benefits than monopoly and why.

Evaluate whether monopolistic competition can be considered an efficient market structure.
a. Identify and define what “excess capacity” means using the reading.
b. Provide one consequence of excess capacity for producers and one for consumers.
c. Argue whether the benefits of product variety outweigh the inefficiency caused by excess capacity. Justify with examples or reasoning from the text.

The reading explains how profits and losses drive industry change.
a. Define “economic profit” and how it differs from “accounting profit.”
b. Describe what happens in the long run when firms in a monopolistically competitive industry earn persistent economic profits.
c. Analyze how this cause-and-effect process ensures market entry or exit.

The reading discusses downward-sloping demand curves in monopolistic competition.
a. Explain why the demand curve for an individual firm in monopolistic competition is downward-sloping.
b. Differentiate this from the perfectly elastic demand curve in perfect competition.
c. Discuss how this difference affects each firm's pricing power.

Suppose a policy was enacted that restricted new firms from entering monopolistically competitive industries.
a. Define the concept of “free entry and exit” as presented in the reading.
b. Predict how restricting entry would impact long-run profits and firm behavior.
c. Explain how this policy might change the equilibrium outcome for consumers and producers.

The reading highlights how firms respond to profits and losses in monopolistically competitive industries. Imagine you’re a policymaker concerned with market health.
a. Describe one condition that signals a healthy long-run equilibrium in this market structure.
b. Give one example of a policy (e.g., on advertising, entry barriers, or regulation) that could disrupt this equilibrium.
c. Reflect on how understanding these dynamics helps citizens evaluate economic policy debates.