Hedonic Rating

In this test the assessor is asked to record  the extent of liking for a product, usually by selecting a category on a "hedonic" or liking scale that runs from "extreme like" to "extreme dislike". A number of different scales have been developed and used. A very popular scale is the following nine - point hedonic scale:

• Like extremely
• Like very much
• Like moderately
• Like slightly
• Neither like nor dislike
• Dislike slightly
• Dislike moderately
• Dislike very much
• Dislike extremely

 
The categories on this scale are equally spaced and it is quite common for the data to be analysed by assigning the values 1 to 9 to the categories on the scale, and then assuming that the intervals are equal. With this  assumption, the data can be summarized by recording average liking "Scores".