What is ISO 11056 about?
ISO 11056 specifies a method for applying magnitude estimation to the evaluation of sensory attributes. The methodology specified covers the training of assessors and obtaining magnitude estimations as well as their statistical interpretation.
Who is ISO 11056 for?
ISO 11056 on methods of sensory analysis through magnitude estimation method is relevant to:
- Sensory scientists/evaluators/analysts
- Food technologists
- Food laboratories
- Biochemists
- Industries such as food and beverage, personal care and cosmetics
Why should you use ISO 11056?
Magnitude estimation is a psychophysical scaling technique where assessors assign numerical values to the estimated magnitude of an attribute. The only constraint placed upon the assessor is that the values assigned should conform to a ratio principle, i.e., if the attribute is twice as strong in sample B in comparison with sample A, the value assigned to sample B has to be twice that assigned to sample A. Attributes such as intensity, pleasantness or acceptability may be assessed using magnitude estimation.
ISO 11056 helps users by specifying a method that allows users to choose their own specific scale for judgments, allowing for in-depth investigations of user perceptions than when categorical scales are used.
Magnitude estimation is the privileged method to determine the Steven’s equation psychophysical power function. It can also be used to solve concrete problems.
As a buyer of ISO 11056, you will receive methods, procedures, and test requirements for analysing and improving the quality management of products and extending the shelf life.
What is changed since the last update?
BS ISO 11056:2021 supersedes ISO 11056:1999. BS ISO 11056:2021 includes some technical changes with respect to ISO 11056:1999. These include:
- The Assessor factor is considered as fixed factor or as random factor
- The R commands used to process the examples and to obtain the different tables are given explicitly
- The numerical examples have been preserved without any modification to allow the user to understand the evolution in the processing of the tables
- A new example has been added as B.2