Table 1. Matched demographic, practice-related and cognitive variables in early-trained (ET) and late-trained (LT) musicians; ET < 5 ≤ LT (n = 110).

Variable	ET (n = 55)	LT (n = 55)	t (108)	p	g
Maternal education (years)	17.94 (2.52)	17.40 (2.48)	1.03	0.30	0.20
Music lessons (years)	5.17 (1.45)	5.09 (1.23)	0.31	0.76	0.06
Weekly practice (hours)	3.28 (1.94)	2.95 (2.46)	0.78	0.44	0.15
Working Memory Index (scaled score)	23.76 (4.51)	22.51 (3.92)	1.55	0.12	0.30
Matrix Reasoning (scaled score)	12.47 (2.74)	12.31 (2.69)	0.31	0.76	0.06