Adoption Of Improved Maize Varieties In Imo State As A Two – Stage Decision Process

Abstract

This paper analyzes the appropriateness of certain statistical techniques in technology adoption studies, and suggests following empirical evidence, that a two –stage probit model may most times be more useful. The model allows for a flexible specification of the process of technology adoption from one stage to two stages, facilitates the modeling of non-adopters and puts right the violation of full information. An application of the model to the adoption of improved maize varieties in Imo state revealed that the two-stage probit model is superior to the univariate probit model having produced a better maximum log- likelihood value and more significant variables. It is therefore recommended for modeling adoption studies.

Global Approaches to Extension Practice Vol.1(1) 2005: 91-96