near-significantp = .064
The analysis of Time-on-task in a 2*2*2*2 repeated measures ANOVA revealed no interaction between Contingency and Time-on-task (F(1, 82) = .014, p = .907, η p 2 < .001), a near-significant interaction between Contingency, Congruency, and Time-on-task (F(1, 82) = 3.516, p = .064, η p 2 = .041), and no interaction between Contingency, Congruency, Time-on-task, and Experiment (F(1, 82) = .032, p = .859, η p 2 < .001).