What is the method called when preference assessment presents all items on the first trial and selected items are not reintroduced?

The method being described is known as "multi-stimulus without replacement." This approach involves presenting a group of items to an individual in a single trial. Once the individual selects an item, that item is not brought back into subsequent trials. This means that the selections are limited to the items remaining in the set, which can provide insight into the individual's preferences over time as they are not repeatedly offered the same items.

This is beneficial because it encourages the individual to express their preferences among a variety of choices and helps to clearly identify which items are most favorable to them without the possibility of repeatedly selecting the same item. The method is structured in a way that maximizes the amount of information gathered during the preference assessment.