Discrimination Testing

Author(s):  
Harry T. Lawless ◽  
Hildegarde Heymann
2017 ◽  
Vol 38 (2) ◽  
pp. N57-N64 ◽  
Author(s):  
Eavan M Mc Govern ◽  
John S Butler ◽  
Ines Beiser ◽  
Laura Williams ◽  
Brendan Quinlivan ◽  
...  

1987 ◽  
Vol 24 (2) ◽  
pp. 154-163 ◽  
Author(s):  
Bruce Buchanan ◽  
Moshe Givon ◽  
Arieh Goldman

For purposes of product testing, several tasks have been used to measure subjects’ discrimination ability (i.e., their ability to distinguish between two slightly different product formulations). Three of the more common tasks are repeat paired comparisons, triangle tests, and preference rankings. In this empirical study, the properties of these three tasks are compared. The repeat paired comparison test is found to be the most sensitive discrimination task, in that subjects demonstrate the greatest ability in distinguishing between formulations, and preference ranking is the least sensitive. The finding that discrimination ability measured by triangle tests is significantly correlated with that measured by paired comparisons lends support to the validity of consistent preference discrimination testing.


Author(s):  
Harry T. Lawless ◽  
Hildegarde Heymann

2013 ◽  
Vol 68 (1) ◽  
pp. e9
Author(s):  
Jonathan Toot ◽  
Michelle Hackman ◽  
Timothy Pringle ◽  
Melissa Beck ◽  
Philip Atterson ◽  
...  

Author(s):  
Herbert Stone ◽  
Rebecca N. Bleibaum ◽  
Heather A. Thomas

1980 ◽  
Vol 17 (1) ◽  
pp. 84-90 ◽  
Author(s):  
Howard R. Moskowitz ◽  
Barry Jacobs ◽  
Neil Firtle

Respondents were given beverages containing different amounts of sweetener. Two types of experimental evaluations were performed. In the first type (paired preferences, double triangle discrimination testing), respondents were tested for ability to discriminate differences between beverages having different sweetener levels and also were asked to indicate which they preferred. In the second type (magnitude estimation), respondents gave numerical ratings to product attributes. In both instances the sweeter products were preferred, or liked more. Discriminating respondents, as identified from the double triangle test or from their ability to track sweetness numerically by ratings, showed the same pattern of preferences as did the total population. Hence, the use of a “discriminating” panel of respondents to assess sensory differences may not necessarily afford better product decisions.


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