Fig 1. Multiple mediation model (according to [31]) for the indirect effect of children’s school system (Montessori vs. traditional) via multiple mediators (executive functions, well-being at school, and creativity skills) on academic outcomes.

The only significant (z > 2) indirect mediation effect on academic outcomes was creativity skills in Montessori schoolchildren (green path). The standardized solution coefficients (ß) and significant p-values < 0.05 (depicted with a star) are reported next to related path.