Sensory analysis


Sensory analysis is a scientific discipline that applies principles of experimental design and statistical analysis to the use of human senses for the purposes of evaluating consumer products. The discipline requires panels of human assessors, on whom the products are tested, and recording the responses made by them. By applying statistical techniques to the results it is possible to make inferences and insights about the products under test. Most large consumer goods companies have departments dedicated to sensory analysis.
Sensory analysis can mainly be broken down into three sub-sections:
This type of testing is concerned with obtaining objective facts about products. This could range from basic discrimination testing to descriptive analysis. The type of panel required for this type of testing would normally be a trained panel.
There are several types of sensory tests. The most classic is the sensory profile. In this test, each taster describes each product by means of a questionnaire. The questionnaire includes a list of descriptors. The taster rates each descriptor for each product depending on the intensity of the descriptor he perceives in the product. In the method of Free choice profiling, each taster builds his own questionnaire.
Another family of methods is known as holistic as they are focused on the overall appearance of the product. This is the case of the categorization and the napping.

Affective testing

Also known as consumer testing, this type of testing is concerned with obtaining subjective data, or how well products are likely to be accepted. Usually large panels of untrained personnel are recruited for this type of testing, although smaller focus groups can be utilised to gain insights into products. The range of testing can vary from simple comparative testing to structured questioning regarding the magnitude of acceptance of individual characteristics.