Getting implicit shadow prices right for the estimation of the Malmquist index: The case of agricultural total factor productivity in developing countries
The Malmquist index has become extensively used in international comparisons of agricultural productivity since it does not require prices for its estimation, which are normally not available. However, the data envelopment analysis (DEA) approach used to estimate this index still uses implicit price...
| Autores principales: | , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2010
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/154447 |
| _version_ | 1855525205874573312 |
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| author | Nin-Pratt, Alejandro Yu, Bingxin |
| author_browse | Nin-Pratt, Alejandro Yu, Bingxin |
| author_facet | Nin-Pratt, Alejandro Yu, Bingxin |
| author_sort | Nin-Pratt, Alejandro |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The Malmquist index has become extensively used in international comparisons of agricultural productivity since it does not require prices for its estimation, which are normally not available. However, the data envelopment analysis (DEA) approach used to estimate this index still uses implicit price information. This entails potential problems because these methods are susceptible to the effect of data noise, and shadow prices can prove to be inconsistent with prior knowledge on cost shares. In this article, we analyze implicit input shadow shares used in the DEA approach to estimate agricultural productivity using the Malmquist index for 63 developing countries. We then set bounds to the implicit input shares by introducing information on their likely value and compare constrained and unconstrained input shares. We conclude that the incidence of zero shadow prices justifies the introduction of constraints in the estimation of the Malmquist index. The article also presents detailed results of TFP growth in developing countries using constrained shadow shares for their estimation. We find that agricultural TFP has been growing steadily in the past 20 years even if countries like China, Brazil, and India are not considered. Remarkably, we find a clear improvement in the performance of Sub‐Saharan Africa since the mid 1980s. |
| format | Journal Article |
| id | CGSpace154447 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2010 |
| publishDateRange | 2010 |
| publishDateSort | 2010 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1544472024-11-15T08:52:31Z Getting implicit shadow prices right for the estimation of the Malmquist index: The case of agricultural total factor productivity in developing countries Nin-Pratt, Alejandro Yu, Bingxin data envelopment analysis shadow prices productivity The Malmquist index has become extensively used in international comparisons of agricultural productivity since it does not require prices for its estimation, which are normally not available. However, the data envelopment analysis (DEA) approach used to estimate this index still uses implicit price information. This entails potential problems because these methods are susceptible to the effect of data noise, and shadow prices can prove to be inconsistent with prior knowledge on cost shares. In this article, we analyze implicit input shadow shares used in the DEA approach to estimate agricultural productivity using the Malmquist index for 63 developing countries. We then set bounds to the implicit input shares by introducing information on their likely value and compare constrained and unconstrained input shares. We conclude that the incidence of zero shadow prices justifies the introduction of constraints in the estimation of the Malmquist index. The article also presents detailed results of TFP growth in developing countries using constrained shadow shares for their estimation. We find that agricultural TFP has been growing steadily in the past 20 years even if countries like China, Brazil, and India are not considered. Remarkably, we find a clear improvement in the performance of Sub‐Saharan Africa since the mid 1980s. 2010-05 2024-10-01T14:01:34Z 2024-10-01T14:01:34Z Journal Article https://hdl.handle.net/10568/154447 en Limited Access Wiley Nin-Pratt, Alejandro; Yu, Bingxin. 2010. Getting implicit shadow prices right for the estimation of the Malmquist index: The case of agricultural total factor productivity in developing countries. Agricultural Economics 41: 349-360. https://doi.org/10.1111/j.1574-0862.2010.00446.x |
| spellingShingle | data envelopment analysis shadow prices productivity Nin-Pratt, Alejandro Yu, Bingxin Getting implicit shadow prices right for the estimation of the Malmquist index: The case of agricultural total factor productivity in developing countries |
| title | Getting implicit shadow prices right for the estimation of the Malmquist index: The case of agricultural total factor productivity in developing countries |
| title_full | Getting implicit shadow prices right for the estimation of the Malmquist index: The case of agricultural total factor productivity in developing countries |
| title_fullStr | Getting implicit shadow prices right for the estimation of the Malmquist index: The case of agricultural total factor productivity in developing countries |
| title_full_unstemmed | Getting implicit shadow prices right for the estimation of the Malmquist index: The case of agricultural total factor productivity in developing countries |
| title_short | Getting implicit shadow prices right for the estimation of the Malmquist index: The case of agricultural total factor productivity in developing countries |
| title_sort | getting implicit shadow prices right for the estimation of the malmquist index the case of agricultural total factor productivity in developing countries |
| topic | data envelopment analysis shadow prices productivity |
| url | https://hdl.handle.net/10568/154447 |
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