ASTM E2263-12
Standard Test Method for Paired Preference Test

Standard No.

ASTM E2263-12

Release Date

2012

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM E2263-12(2018)

Latest

ASTM E2263-12(2018)

Scope

5. Significance and UseTop Bottom

5.1 The paired preference test determines whether or not there is a preference for one product over another product among a specific target population. Knowledge of consumer segments, brand loyalties, the range of product offerings in the marketplace, and the decision risk must be understood when planning a paired preference test.

5.2 The paired preference method is commonly used in tests with one or more of the following objectives: (1) to establish superiority in preference versus the competition for advertising claims support; (2) to establish the preference of a new product for launch versus a competitor's product; ( 3) to establish the preference of a reformulated product in a product improvement or product modification project (for example, process change or ingredient change); and (4) to establish the preference of a cost improved product versus the current formulation in a cost savings project. Selected values of P_max, ??, and ?? will change with all four types of test objectives. These should be selected prior to determination of N.

5.2.1 Preference versus Competition or Launching a New Product versus Competition???Select a P_max to represent what you expect a reasonable preference split to be. The main risk to avoid is to wrongly claim your product is preferred over the competitors. Thus, low values of ?? are selected, for example, 0.05, 0.01, or 0.001. The desired outcome of this test is to reject the null hypothesis. The alternative hypothesis is one sided: A new or improved product (A) is preferred over the competitor???s product (B). The test is one-sided. The value of ?? will be determined by the sample size chosen and the size of the preference in the consumer segment selected for the test. Selection of the appropriate number of respondents is determined by P_max, ??, and ??, as well as the market segment that must be included in the test (for issues specific to conducting a paired preference test for an advertising claim, refer to Guide E1958).

5.2.2 Cost Reduction or Reformulation of an Existing Product???When parity preference is the desired test outcome, values of ?? are increased and values of ?? are decreased. For example, if a product is developed which represents a significant cost savings over the current formulation and there is concern over alienation of current users, ?? might be selected at 0.20 and ?? might be selected at 0.01. Parity testing can be either one-or two-sided depending on the action standards of the test. The test is one-sided if the action standard is that the product must be parity or better. The test is two-sided if the action standard is parity only. The number of respondents chosen must reflect the risk...........

ASTM E2263-12 Referenced Document

• ASTM E1871 Standard Practice for Serving Protocol for Sensory Evaluation of Foods and Beverages
• ASTM E1958 Standard Guide for Sensory Claim Substantiation
• ASTM E2164 Standard Test Method for Directional Difference Test
• ASTM E253 Standard Terminology Relating to Sensory Evaluation of Materials and Products
• ASTM E456 Standard Terminology for Relating to Quality and Statistics
• ISO 5495 Sensory analysis — Methodology — Paired comparison test TECHNICAL CORRIGENDUM 1

ASTM E2263-12 history

• 2018 ASTM E2263-12(2018) Standard Test Method for Paired Preference Test
• 2012 ASTM E2263-12 Standard Test Method for Paired Preference Test
• 2004 ASTM E2263-04 Standard Test Method for Paired Preference Test