Figure 2

Examples of single-feature (shape) and feature-binding (color-shape) trials.
All conditions consisted of a display of 4 items, where 2 items would change their appearance in a change trial. Locations would always change between the study and test array, in every item and every trial. Note that, although irrelevant, colors are added to shape-only trials as well in order to keep stimulus attributes identical between the shape-only and binding conditions. The white dotted circles (not visible to the participants) in the bottom panel denote the color-swapped shapes in a binding change trial.