Figure 1. Examples of target and non-target images in the Bird experiment (A) and the Dog experiment (B) used either in the superordinate or in the basic level task.

Note that in each experiment, half of the targets in the animal/non animal task are images of the corresponding basic level category (birds or dogs). In basic level tasks, half of the non-targets are images from the same superordinate category (non-bird or non-dog animals).