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| Liu, Yucan; Shumway, C. Richard. |
| The curvature properties of the indirect utility function imply a set of refutable implications in the form of comparative static results and symmetric relations for the competitive firm operating under uncertainty. These hypotheses, first derived and empirically tested under output price uncertainty by Saha and Shumway (1998), are extended in this article to the more general case of both price and quantity uncertainty and result in an important theoretical finding. Using recently developed techniques for testing unit root and cointegration in heterogeneous panels, we develop a model of U.S. agricultural production based on the time series properties of a panel of state-level data and contrast test implications with those resulting from a traditional model... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Risk and Uncertainty. |
| Ano: 2005 |
URL: http://purl.umn.edu/36307 |
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| Shumway, C. Richard; Liu, Yucan. |
| This paper uses recently developed panel cointegration techniques and error correction modeling to test the hypothesis of induced innovation in a state-level panel of U.S. agricultural production. These methods provide greatly improved power compared to conventional approaches. A 5-step testing procedure is used to test the induced innovation hypothesis based on a 2-stage CES production function with aggregate output and four input categories. For both pairs of inputs, the test fails to support the hypothesis of induced innovation at one or more of the critical steps. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2006 |
URL: http://purl.umn.edu/21089 |
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| Liu, Yucan; Shumway, C. Richard. |
| The curvature properties of the indirect utility function imply a set of refutable implications in the form of comparative static results and symmetric relations for the competitive firm operating under uncertainty. These hypotheses, first derived and empirically tested under output price uncertainty by Saha and Shumway (1998), are extended in this paper to the more general case of both price and quantity uncertainty and result in an important theoretical finding. Empirical tests using a panel of state-level observations fail to reject most refutable hypotheses under output price and output quantity risk, but symmetry conditions implied by a twice-continuously-differentiable indirect utility function are rejected. Two restrictive risk preference hypotheses... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Indirect utility function; Refutable implications; Risk and uncertainty; Risk and Uncertainty. |
| Ano: 2005 |
URL: http://purl.umn.edu/19331 |
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| Liu, Yucan; Shumway, C. Richard. |
| The hypothesis of induced innovation (Hicks, 1932) is tested for U.S. agriculture using a high-quality state-level panel data set and three disparate testing techniques ¨C time series, econometric, and nonparametric. The conclusion of little support for the hypothesis is robust across testing techniques. However, each test maintains the hypothesis that the relative marginal cost of developing and implementing technologies that save one input is the same as for any other input. Lacking data on development and implementation costs of input-saving technologies, we use nonparametric procedures to estimate relative differences required for technological change to be consistent with the induced innovation hypothesis. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2007 |
URL: http://purl.umn.edu/9844 |
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