How Do I Generate an Experimental Design

How Do I Generate an Experimental Design

In EyeQuestion you can generate different kind of experimental design. Some experimental designs are already included in the application, while specific ones can be imported. In the following article you will find more information on this kind of experimental design and how you can modify them.

All the design settings can be found in the Design setting

Using the Design Generator (1) is one way to create a new design. For a given number of products and panellists, it generates
a design based on the design type selected. 

If your preferred design cannot be created using the design generator, a custom design can be created using excel and imported in an EyeQuestion project (2). Read more about this functionality in the following article:

Design Type: the type of experimental design. Read more about the different design type in the following article:
Products/Objects (t): the total number of products you want to use. Set this parameter to 4 if you want to evaluate 4 different products.
Repetitions (r): the number of repetitions you would like to use. For example, if you set the number of products to 4 and the number of repetitions to 2 the system will generate a design with sets containing 8 samples. Every product is presented twice. These 8 samples are balanced in each sample set, they occur equally on each place.
Sets/Subjects (b): the total number of sample sets to generate. You should generate at least as many sets as there are panelists when everyone on the panel needs one.
Codes per product: the number of different blinding numbers to generate for one product. When set to 1, every product has one unique sample blinding code. When set to 100, every sample has a unique blinding code
My blinding codes: set the blinding codes you want to use. Separate the codes with a comma. For example: 567, 241, 839.
Multi Product: set to Monadic Sequential and the system generates a monadic design. Set to 1 to 4 Combinations and it generates a "blocked" design. Every block of samples is considered as a combination/block of samples which is presented to the panelist as one treatment. Use a blocked design for ranking and binning tests. For example, when the Number of Products is 4 products, and the Number of Blocks is set to 2. The generator will generate a design with two blocks containing two products.
Sessions: with sessions you can split your design into multiple sessions. Suppose you have 8 samples to be evaluated. Today you will ask your panelists to evaluate four of them and tomorrow the remaining ones. In this case you specify the number of sessions to two.
Session Pattern: specify the session patter you would like to use to specify the number of products in a session.
Repeat design: the number of times you would like to repeat the design in the sample set. For example, set the number of products to 3 and repeat design to 2. The 3 samples will be balanced throughout the design. Each sample set contains 3 duplicate samples which are arranged after the original samples.

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