Table A1.

Table with the characteristics of the children.

Group Activity	2nd			4th			5th
		Singing	Writing	Control	Singing	Writing	Singing	Writing
		16	16	16	8	8	8	8
Average Age	months	84	84.8	84	108	108	120	120
	t test (p value)	S vs. W	W vs. C	S vs. C	1		1
		0.33	0.59	1
Gender	Girls	6	4	8	4	4	4	4
	Boys	10	12	8	4	4	4	4
	Chi2 (p value)	S vs. W	W vs. C	S vs. C	1		1
		0.45	0.14	0.48
Handedness	R	14	11	12	8	8	8	8
	L	2	5	4	0	0	0	0
Extracurricular Activity (%)	Total	56.3	56.3	37.5	62.5	37.5	62.5	87.5
	Art	12.5	6.3	6.3	0	25	0	12.5
	Sport	43.8	56.3	31.25	62.5	25	62.5	75
	Music	6.3	0	0	12.5	0	0	37.5
Learning Disability (%)	Dyslexia	12.5	12.5	0	12.5	12.5	12.5	12.5
	Dyspraxia	12.5	0	0	0	0	0	0
	Other (s)	12.5	0	18.8	12.5	0	0	0