The Australian Wine Research Institute > Services to Industry > Winemaking > Sensory assessment > Sensory difference methods > Same/Different

Same/Different


Test Same/different
Min. Tasters1 7
Use When a difference is unknown
Samples Two coded test samples (A,B)
Tasting sheets Click here
Basic method Tasters assess both samples and indicate whether they think samples are the same or are different.

Possible serving orders3: AB, AA, BA, BB
(Note: two serving orders are presented to each taster)

Example:

Results:

  • correct responses = 11
  • total responses = 14
  • significant difference for 11/14 = yes
Results Are the wines significantly different?

Correct response – Taster correctly picks the two samples as being the same or different, depending on the serving order.
Significance – Required no. of correct/total responses2:
Repeated tasting: 10/12 11/14 12/16 13/18
Notes:
1 Indicates the minimum number of tasters required for testing to achieve a statistically significant result (p < 0.05).
2 Figures denote minimum number of correct responses required out of the total number of responses to conclude the wines are significantly different from each other.
3 Serving orders denote possible arrangements of the samples to be presented randomly to tasters.