Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs41235-018-0124-5/MediaObjects/41235_2018_124_Fig1_HTML.png)
Example display of experiment 1. The light grey disks in the first frame were yellow in the experiment proper and the black disk in the last frame was red
Example display of experiment 1. The light grey disks in the first frame were yellow in the experiment proper and the black disk in the last frame was red