Torgerson's Test

Torgerson's Test

Overview

The pre-set Torgerson's test type template comes distributed with the software for you to use in a click of a button! A Torgerson's test is a discrimination test type that presents three samples, all of which are different from each other. One of the samples is the reference marked REF and each sample has the opportunity to be served as a reference to every panelist in a back-to-back fashion.

This test type is useful for quality testing when you have a reference or gold standard you'd like to compare to 2 different samples for similarity, to determine if the samples from two different batches are within the expected range of variability.


The panelist must select the sample that they perceive as the most similar to the reference. There is no right or wrong answer.



Question Compatibility

The Torgerson's test type is compatible with the following question types:
  1. Choose
  2. Comment

Text/time delay screens are compatible with all test types and question types .


Create the Test 

  1. On the Dashboard, in the Folders list on the left, select the folder where you wish to save your new Torgerson's test.

    Use the vertical dot menu to create new sub-folders and to edit existing ones as needed.

  2. Click Create a new test .

  3. Next to the Torgerson's test type , click Use .


  4. Type the test name and specify the location for it (in case the folder selected in the first step was not the right one).

  5. Click Create test . The test will open up.
The Test ID displayed in the top right-hand corner is an important unique identifier useful for test searches. The Test ID can also be found in the Dashboard.

Please have the Test ID handy when you reach out to our Support Team for assistance.


Update the Test

Although the template test has a number of preset components that likely you will not need to modify, you will still have to update some components to make them reflect your testing needs. For example, you might want to add a follow up Comment question or a follow up Choose question.

Please go through each test tab outlined below and make necessary changes.
  3. Build  


  5. Logistics


Preview and Run the Test

When all test components have been added and configured, you may preview the test and then present it to your panelists.


Analysis

Click the Results tab to access and choose from the following analysis options:
  1. Data - Raw data display in two columns indicating the reference sample in one column and in the other column the sample panelists selected to be the same as reference.

  2. Comment Sorting - Available only if Comment question was used in the test. It lists all comments submitted in Comment questions, providing the ability to tag specific responses.  

  3. Reports - Create or view previously generated reports, or view scheduled reports. The following reports are compatible with the Duo-trio question type:
    1. Standard report - Detailed information including:
      1. Number of Evaluations - The number of complete evaluations.
      2. Samples - Information about the samples in the test.
      3. Thurstonian estimates - Information about the distance between means when the control sample is compared to other samples individually.
      4. Thurstonian model for Torgerson's method of triads - Information about the probability of each reference sample being more similar to one of the other two samples.

    2. Comment Sorting - Export Comment question responses, sorted by tags added within the Comment sorting tab.

    3. Panelist completion time report - Provides the average test completion time for the test and the total time for each panelist.
    1. Raw data export - Choose from the Multivariate, Univariate, and Multivariate Columnar raw data export formats to suit your exporting needs.

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