**Appendix A**

**Figure A1.** (**a**) Ratings distribution of the Valence dimension for all the measurements. (**b**) Ratings distribution of the Arousal dimension for all the measurements. (**c**) Ratings distribution of the Dominance dimension for all the measurements.

**Figure A2.** (**a**) Ratings distribution of the "Difficulty" question for all the measurements. (**b**) Ratings distribution of the "Performance" question for all the measurements. (**c**) Ratings distribution of the "Stress" question for all the measurements. (**d**) Ratings distribution of the "Motivation" question for all the measurements.

**Table A1.** (**a**) Newman-Keuls post-hoc corrections for the VAD dimensions (V = Valence; A = Arousal; D = Dominance) of the SAM Ratings and the six sequences Seq. (I= *Interest*, O= *Overload*, N= *Normal*, E= *Easy*, U= *Underload*, F= *Frustration*) for Group A. Significant effects are highlighted in bold (*p* < 0.05). (**b**) Newman-Keuls post-hoc corrections for the VAD dimensions (V = Valence; A = Arousal; D = Dominance) of the SAM Ratings and the six sequences Seq. (I= *Interest*, O= *Overload*, N= *Normal*, E= *Easy*, U= *Underload*, F= *Frustration*) for Group A + Group B1. Significant effects are highlighted in bold (*p* < 0.05).


(**a**)





**Mot F 0.000 0.000 0.000 0.000 0.000 0.000** 0.454 **0.000 0.000 0.007 0.002 0.007 0.000** 0.768 **0.000 0.000 0.000 0.000 0.000** 0.941 **0.010 0.027** 0.423 (**a**)

**Str E 0.000 0.000 0.000** 0.254 0.181 **0.000 0.000** 0.606 **0.000 0.000 0.000 0.000 0.000 0.000 0.000** 0.462 **0.000 0.000 0.000 0.000 0.000 0.000 0.000 Str U 0.000 0.000 0.000** 0.075 0.059 **0.000 0.000** 0.423 **0.000 0.000 0.000 0.000 0.000 0.000 0.000** 0.462 **0.000 0.000 0.000 0.000 0.000 0.000 0.000 Str F** 0.768 **0.000** 0.659 **0.000 0.000** 0.205 **0.000 0.000** 0.864 **0.000 0.000** 0.222 0.826 **0.000** 0.813 **0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Mot I 0.000** 0.883 **0.000 0.000 0.000 0.000 0.000 0.000 0.000** 0.121 0.077 **0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000** 0.070 **0.050 0.000 0.000 Mot O 0.000 0.000 0.000 0.000 0.000 0.000** 0.341 **0.000 0.000 0.006 0.002 0.011 0.000** 0.928 **0.000 0.000 0.000 0.000 0.000 0.009 0.021** 0.239 0.941 **Mot N 0.000** 0.086 **0.000 0.000 0.000 0.000** 0.192 **0.000 0.000** 1.000 0.659 **0.000 0.000 0.004 0.000 0.000 0.000 0.000** 0.070 **0.009** 0.864 0.176 **0.010 Mot E 0.000 0.047 0.000 0.000 0.000 0.000** 0.141 **0.000 0.000** 0.606 0.774 **0.000 0.000 0.015 0.000 0.000 0.000 0.000 0.050 0.021** 0.864 0.208 **0.027 Mot U 0.000 0.000 0.000 0.000 0.000 0.000** 0.825 **0.000 0.000** 0.121 0.085 **0.000 0.000** 0.410 **0.000 0.000 0.000 0.000 0.000** 0.239 0.176 0.208 0.423


