Randomising a Virtual Shelf Setup

Randomisation can be understood in two different ways:

1 - Cell Randomisation

is the the randomisation of the order in which to display each POG / Cell / Layout, meaning we show a respondent different layouts of a shelf setup. This is typically limited to a hand full of cells, as each one will be more or less the same but has a slight change.

The way this would normally work, is to have 3+ cells with-in one link that get randomly cycled for each respondent. So each respondent will see a shuffled deck essentially.

2 - Product Randomisation

In this version, what we are doing is randomising the products on the shelf (in a cell). This means the products are shuffled. As we are dealing with 3D space and the products are of different sizes, we need to pre-compute the randomisation order using this Excel sheet.

This can be quite complicated, and as such, we need to make sure that the products look good on the shelf, therefore, we pre-compute the randomisation and then build each cell individual. The number of cells of randomisation will depend on the sample number.

In the setup, the client will have access to quite a number of links, anywhere between 20 - 50+ where they can chose the link to show any number of respondents. This gives them total control over the flow.