Paired comparision technique

Paired comparison technique is a method for scale construction developed by Thurstone. It involves comparing stimuli in pairs to determine which is perceived as better. Judges' responses are used to construct F, P, and Z matrices to calculate scale values. An example is given of identifying benefits of a dairy development scheme using this technique. The results show economic independence had the highest scale value, followed by sustainable employment, risk reduction, and social acceptability, with supporting others having the lowest value. Internal consistency is checked by calculating the average absolute discrepancy between empirical and expected proportions, with a lower value indicating higher consistency.