Fig. 5

Heatmap for the specialized population: Relationship between objective and subjective comprehension. The X axis represents the level of objective comprehension, i.e. number of correctly answered questions. The Y axis represents the level of subjective comprehension, i.e. how sure you are about your answers. V: Cramer’s V strength of association. Levels of significance: *** p < 0.001; ** p < 0.01; * p < 0.05