Intensity of musical activity. A, Distribution of I_MP for AD(H)D children (A) and for LPs and HPs. The latter were defined by a cutoff value at the saddle point (asterisk at I_MP = 2.5). B, Left, I_MP group means (LP, HP, A); right, I_MP of JeKi participants (J): on average, half of the practicing time was devoted to the JeKi program (dark red part) and the other half to extracurricular musical lessons (bright red part). C, Correlation of IMMA score and I_MP at the second MTP.