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Useful data relating to product attributes preferences can be obtained by using various methods of product research. Product research can be conducted on existing products or new products before or after its entry in the market. It can be done by various ways and the important commonly used methods of product research are; Paired comparison tests, rank order test, rating scales, or statements concerned with likes and dislikes. The latter usually involves using a semantic differential test. Regardless of method employed, the objective is to obtain consumer preference measure and opinion for each salient product characteristic features, product attributes as well as for the overall product. The following data gathering techniques pertaining to Product research are discussed below. 1 Staggered Comparison Test: This test is used to test several products in sequence form i.e., one after another. The respondent is given one product at a time for examination and use purpose.
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