In an experiment examining the effects of size of plate on amount of food eaten, one group of participants is measured after eating food on 12 inch plates. A week later, the same group of participants is measured after eating food on 10 inch plates. This is an example of a design.

Within subject

Explanation:

A within study design is also called the repeated measures design. Here we use the same participants twice or more to test the same condition. Every one on the participants are made to test all conditions.

From this question, we can see that same group of participants participated twice in the study, first after eating on 12 inch plate, secondly after using the 10 inch plate.