Figure 3.

Difference in inverse efficiency scores (IES) in Experiment 1. Task x Congruence of Action interaction (upper panel): the grey lines indicate single-subject data and the thick black lines indicate the mean values. Overall performance on the Joint Action (JA) task was as efficient as performance on the Non-Interactive (Non-Int) task, as suggested by the absence of a significant main effect of Task in the ANOVA. The Bayes Factor Robustness Check as implemented in JASP (lower panel): given the data, Experiment 1 provides strong evidence (BF₁₀ > 10) supporting a significant “IES-Incongruent > IES-Congruent” effect in the Non-Int condition, and strong evidence in favor of the null hypothesis (i.e., absence of the IES-Incongruent > IES-Congruent effect, BF₁₀ < 0.10) in the JA condition.