Fig 3. Stimulus properties affect choices during the training phase of the probabilistic learning task.

The figure displays accuracy (choosing the most rewarded stimulus) for each of the three Hiragana pairs for both task versions in experiment 1a (panel A) and 1b (panel B). In task version 2, subjects performed better at both the AB and CD pair relative to the EF pair, compared to task version 1. This pattern was consistent across both experiments. Furthermore, subjects in task version 1 of experiment 1b performed better at the AB pair relative to the other pairs, compared to task version 2.