Matching Economic Concepts with Authors

This section provides a detailed explanation for matching specific economic concepts and models with their corresponding authors or theorists, as presented in the question.

Concept 1: The 'Kinked-Demand' Model and Chamberlin

The pairing associates the 'Kinked-Demand' model with Chamberlin. This economic model describes a unique shape of the demand curve faced by a firm in an oligopolistic market. The curve is 'kinked' at the prevailing price, suggesting that firms react asymmetrically to price changes. If a firm increases its price, competitors are assumed not to follow suit, causing the firm to lose a significant number of customers (highly elastic demand). Conversely, if a firm lowers its price, competitors are expected to match the reduction, leading to a smaller gain in customers than anticipated (less elastic demand).

Please note: This explanation is based on the specific pairings provided in the question material. Standard economic literature often attributes the kinked-demand curve theory primarily to Hall and Hitch, and later P. Sweezy.

Concept 2: The 'Heroic' Assumption and Cournot

The term 'Heroic' assumption is linked to the foundational work of Cournot in oligopoly theory. This assumption simplifies the strategic environment for firms. Specifically, it means that each firm determines its optimal output level under the strict belief that its rival firm(s) will maintain their current output levels. This allows for a clear, calculable model of duopoly or oligopoly behavior.

Concept 3: Price Stability Assumption and Bertrand

The condition that 'Other firm holds its price constant' directly relates to the principles of the Bertrand model. This model focuses on price competition among firms. Within this framework, each firm sets its price, making the strategic decision based on the assumption that the prices chosen by its competitors will remain fixed. This competitive dynamic drives prices down towards marginal cost in theoretical models.

Concept 4: Output Stability Assumption and P. Sweezy

As per the provided pairings, the scenario 'Other firm holds its output constant' is matched with P. Sweezy. This assumption implies that a firm's decision regarding its own production volume is made with the expectation that competitors will not alter their output quantities. This forms a basis for analyzing strategic interactions concerning production levels.

Please note: Standard economic texts typically associate the assumption of competitors holding output constant with the Cournot model. This explanation adheres to the pairings given in the question.

Summary of Matches

The following table summarizes the concepts matched with authors based on the provided correct answer:

Determining the Correct Option

By consolidating the matches:

• Concept (1) 'Kinked-Demand' model matches with Author (d) Chamberlin.
• Concept (2) 'Heroic' assumption matches with Author (a) Cournot.
• Concept (3) 'Other firm holds its price constant' matches with Author (b) Bertrand.
• Concept (4) 'Other firm holds its output constant' matches with Author (c) P. Sweezy.

This set of pairings, (1)-(d), (2)-(a), (3)-(b), (4)-(c), corresponds precisely to Option 1.