The file contains one folder for each participant N ∈ {1, …11}.

Within each folder, the name of the text file indicates the parameters. The participants 1…7 completed four conditions of generative noise σg ∈ {0, 0.03, 0.1, 0.4} and the variance parameter was σπ = 0.1. For example, the file subj1_sig_g = 0.1.txt contains all trials of the first participant with generative noise σg = 0.1. The participants 8…11 completed only one condition: σg = 0.1 and σπ = 0.5. Since the variance parameter is different from its default value, we indicate it explictely in the file name, e.g. subj8_sig_pi = 0.5_sig_g = 0.1.txt. Each data file contains 11 columns. The first eight columns describe the x and y coordinates of the stimulus points. The last three columns contain (in that order) the stimulus index j ∈ {1, …20}, the generating quadratic parameter wj and the vertical location of the observed response. (ZIP)