Instructions:

The task for stimulus set 2 is essentially the same as with stimulus set 1 except that now stimuli are classic hierarchical stimuli, with global letters formed from many small examples of some different local letter. See if you can learn what local and global targets correspond to left and right keys, and see if you think that the bias affects the probability that you choose the correct key and/or affects the speed with which you choose a key. Notice that the very same stimulus, such as an H, can appear either as a global letter formed from a different local letter, or as a local letter forming a different global letter.