Accuracy for outcome prediction: Difficulty only vs difficulty and skill models.

Abstract

Colours correspond to different wd values in the skill and difficulty models; note that wd = 0 (purple) is equivalent to a model with skill only; black is used for the model with difficulty only. Top: overall accuracy; each dot represents one subject. Bottom: accuracy per difficulty level; mean ± s.e.m across subjects; difficulty was z-scored for each subject and discretised in 10-quantiles. (TIF)</p