文章基本信息

标题：Grain price adjustment asymmetry: the case of cowpea in Ghana
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作者：Langyintuo, Augustine S.
期刊名称：Journal of Agribusiness
印刷版ISSN：0738-8950
出版年度：2010
出版社：Journal of Agribusiness
摘要：Patterns in price adjustment in response to information are important to market practitioners. This study looks at cowpea real wholesale price adjustment patterns in Bolgatanga, Wa, Makola and Techiman markets in Ghana. Using Techiman as the central market, a threshold autoregressive test for asymmetric price adjustment rejected the null hypothesis of symmetric adjustment for only the Bolgatanga-Techiman price series. An autoregressive conditional heteroskedastic regression indicates that wholesalers in Bolgatanga market respond differentially to price signals from Techiman than those in the other two markets. This suggests that policies targeting cowpea traders must recognize the differential responses by wholesalers to information.
关键词：Africa;Ghana;wholesalers;market information;autoregressive conditional heteroskedasticity;threshold autoregressive