Journal Article: The power of sensory discrimination methods (1993)

Abstract:
Difference testing methods are extensively used in a variety of applications from small sensory evaluation tests to large scale consumer tests. A central issue in the use of these tests is their statistical power, or the probability that if a specified difference exists it will be demonstrated as a significant difference in a difference test. A general equation for the power of any discrimination method is given. A general equation for the sample size required to meet Type I and Type II error specifications is also given. Sample size tables for the 2-alternative forced choice (2-AFC), 3-AFC, the duo-trio and the triangular methods are given. Tables of the psychometric functions for the 2-AFC, 3-AFC, triangular and duo-trio methods are also given.

This article appears as:
Ennis, D. M. (1993). The power of sensory discrimination methods. Journal of Sensory Studies, 8(4), 353-370.

Colleagues can request this journal article here:
The power of sensory discrimination methods

Not a Colleague? Click here to join for free!

Upcoming Webinar

September 21, 2017
2PM EDT

Large TURF Problems: Finding Custom Solutions

__________________

Announcing the release of the 2016 Webinar Series Package!

Offered at a discounted rate of 50% off regular price, this package contains recordings of all four webinars offered during the 2016 Quarterly Webinar Series.

Create Your Own Webinar Package

__________________

Webinar calendar

Membership

Become a Colleague!

Join now to gain access to our technical reports, presentations, and more!

Click here to login or join.

Student Award

Now accepting applications for the
2017 Institute for Perception Student Award

site search