Figure 2
From: Judgments of effort exerted by others are influenced by received rewards
Influence of reward on effort judgments for self and others. In order to estimate the influence of reward on effort judgments, the trial-by-trial fluctuations in rewards were used in a linear regression to predict estimated effort, separately for self- and other-judgments of each subject. (A) Data of one representative subject is shown as a scatter plot and a linear regression between trial by trial variation in reward and effort for self- (left) and other-judgments (right). Trial-by-trial reward magnitudes and effort ratings were z-scored within each difficulty level, representing variations in comparison to the average of the difficulty level. (B) Group average of the model-free slope ± standard error of mean are presented (N = 51). (C) The individual model-free slopes for self- (x-axis) and other-ratings (y-axis) are presented as a scatterplot. The diagonal line represents the line of equality; a point on this diagonal would indicate that a subject shows the same amount of reward integration for self- and other-judgments. The example subject in (A) is indicated by an orange dot. One-sample signed test and Wilcoxon signed rank test, two-sided *p < 0.05, **p < 0.01, ***p < 0.001.
