FACTOR SUBSTITUTION, RATIONAL EXPECTATIONS, AND THE EFFECTS OF COMMODITY PRICE SHOCKS ON EMPLOYMENT AND INVESTMENT

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Abstract
Within an aggregate model with three inputs to production, the paper studies the effects of an increase in the price of one of the inputs, called commodities. No restrictions are placed on the production possibility constraint, and expectations are assumed to be formed rationally. After considering the effects on the demand for the two remaining inputs, labor and capital, the paper analyzes the effects on employment under a wage rigidity constraint. A dynamic formulation is used to analyze the effects on investment, which are found to depend weakly and sometimes perversely on partial substitution parameters.

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