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Chicago. Economic Theory Prelim Exam. Summer Quarter, 1958

Element from Social Science Research Bldg at U of Chicago

 

Links to previously posted Chicago prelim exams.

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ECONOMIC THEORY PRELIMINARY EXAMINATION

SUMMER, 1958
AUGUST 1, 1958

ANSWER ALL QUESTIONS

The true-false-uncertain questions, as a group, and the essay questions, as a group, are to be given equal weight in grading the examination.

GROUP I

Indicate in the space provided the correct answer–True (T), False (F), or Uncertain (U). Explain your answer in the space provided on the pages following. Do not write more than can be included in the space provided. [Note: four T-F-U questions fit on a single page]

True (T), False (F), Uncertain (U)

  1. _____ A negative income elasticity of demand implies a positive price elasticity.
  2. _____ The demand curve for leisure is upward sloping.
  3. _____ Steel prices and output usually move together during business cycles. This means that the income effect of a rise in price is greater than the substitution effect.
  4. _____ If the price elasticity of demand is -1.0 each for commodities A and B separately, then the price elasticity of A and B taken together, the price elasticity of the joint demand for A and B, can be higher than -1.0 in absolute value.
  5. _____ When average costs are increasing, marginal costs are also increasing.
  6. _____ Prices that change only rarely constitute evidence of monopoly power.
  7. _____ A proportional income tax will have no effect on occupational choice, while a progressive income tax (same total revenue) does have an effect.
  8. _____ The price elasticity of demand for an input depends mainly upon the elasticity of demand for the final product and the relative share of total costs represented by payments for the specific input.
  9. _____ Inputs A and B are used in the production of the same product. An increase in the price of A (due to a shift in the supply function for A) will result in a decline in the price of B.
  10. _____ If the rate of interest is stable over time, firms may change the ratio of machines to labor.
  11. _____ When the borrowing and lending rates facing a firm differ, a firm may make the appropriate investment decision by maximizing the present value of the firm.
  12. _____ If the amount of capital which a firm can invest is fixed, it will choose the same investment whether it maximizes the average internal rate of return or the present value of the investment.
  13. _____ The long-run elasticity of supply of labor per person (supply measured in hours of work per lifetime) cannot exceed unity numerically.
  14. _____ The white persons who gain the most by market discrimination against Negroes are those with the greatest tastes for discrimination against Negroes.
  15. _____ If a union succeeds in raising wages, it will cause the ratio of the costs of the union labor to total costs to rise.
  16. _____ An effective minimum wage law will tend to cause labor to move out of employments having relatively great net non-pecuniary advantages.
  17. _____ Since the marginal productivity of labor rises as the ratio of capital to labor rises, wages will be higher in industries with high capital-labor ratios than in industries with low capital-labor ratios.
  18. _____ Long-run marginal cost cannot exceed short-run marginal cost.
  19. _____ If the price of wheat in market A is $2.00 per bushel and the cost of transporting a bushel of wheat from market A to market B is $0.10, the price of wheat in market B is $2.10.
  20. _____ If equal percentage changes in labor and land lead to the same percentage change in the output of wheat, and if labor yields increasing average products, the world’s wheat could be grown in a flower pot, if the pot were small enough.

GROUP II

  1. Describe briefly the major contributions of the following economists:

(1) W.S. Jevons
(2) A.A. Cournot
(3) V. Pareto
(4) Irving Fisher

  1. —
    1. The demand function for a product is P = 115-Q. The total cost of producing Q units in one plant is given by
      TC = 40Q – 10Q² + Q³. Only one-plant firms are allowed.

      1. What is the long run competitive solution (price and quantity)? [Handwritten margin note: “…and the number of firms in the industry”]
      2. What would be the approximate price charged and the quantity produced if there was only one one-plant firm and it maximized its profits. (Work only with round figures.) How much profit would it make?
    2. Assume now that a firm may have more than one plant. What is the monopoly solution? [Handwritten addition: “How much profit will it make?”]
  1. The C.E. Company, a mining company, currently operates a commissary at which employees of the company may obtain free of charge a variety of food and clothing items. The amount of each item that an employee may obtain per week may not exceed a specified amount (ration), the same for all employees. The company proposes to close the commissary next month and simultaneously to give the employees an increase in weekly wages equal to half the market value of the ration. The company, learning that you are an economist, has asked you whether the putting into effect of their proposal would increase, decrease, or leave unchanged the real weekly wages of its employees.
    1. Could you give them a definite answer without additional information? Explain.
    2. If your answer to (A) is “no”, what additional information, if any, would enable you to be certain that their proposal would decrease real weekly wages? Would increase real weekly wages? Would leave real weekly wages unchanged? Explain your answers.
  2. A study of the relationship between changes in employment by industry groups and changes in wage rates for the period from 1929 to date in the United States does not reveal a significant positive relationship between the two variables, i.e., larger changes in employment were not associated with larger changes in wage rates.
    Comment on this result in terms of the degree of competition in labor markets and the effect of wage differentials in inducing labor transfers.
    What would have been the implications if there had been a positive correlation between the variables? If there had been a negative relationship?

Source:  Harvard University Archives. Papers of Zvi Griliches, Box 130, Folder “Preliminary Examinations, 1957-1965.”

Image Source: University of Chicago Photographic Archive, apf2-07449, Hanna Holborn Gray Special Collections Research Center, University of Chicago Library.

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Preliminary and Field Exams from the economics graduate program of the University of Chicago

Note: The chronological ordering of quarters at the University of Chicago during a calendar year goes Winter, Spring, Summer, Autumn. For this reason the following is arranged chronologically.

 

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