Fig. 3: Intrinsic reward sensitivity is partially domain general.

a–c, The variance explained by the first factor of a factor analysis (using a bi-factor rotation) across all reward types (visual, cognitive, social, monetary, neutral) and responses (liking, wanting, reinforcing) shows a clear first factor that accounts for, on average, about 40% of the variance in responses in experiments 1 (a, N = 132 participants), 2 (b, N = 171 participants) and 3 (c, N = 180 participants). The corresponding loadings are displayed with orange bars for intrinsic rewards, blue bars for monetary reward and grey bars for neutral stimuli. We term this first factor reward sensitivity. Note that the violin plots on the left correspond to Fig. 2 and are used to illustrate the data used in the factor analysis (see Fig. 2 for details).