Assessing reliability and validity of a measurement instrument for studying uncertain factors in Thai rice supply chain

It is widely argued that uncertain factors generate unstable processes along supply chains, which in the end worsen their performance. This research assesses reliability and validity seven uncertain factors (supply, demand, process, planning and control, competitor behavior; government policy and climate uncertainty). Data for the study were collected from rice millers and rice exporters, and the measurement scales were tested on reliability and validity using Partial Least Squares (PLS) and Multicollinearity as there are the formative measurement models. The results support that the formative measures of uncertain factors are reliable and valid. It is expected that this study will provide a useful measurement instrument to assess any effects in agri-supply chains for further research.