Music training for 3-5 year olds ups their IQ.
In early childhood, the arts have been implicated in improved IQ, spatial cognition, and numeracy compared to kids without the arts training.
Neville, H. "Effects of Music Training on Brain and Cognitive Development in Under-Privileged 3-to-5-Year-Old Children: Preliminary Results," in Learning, Arts, and the Brain, eds. Carolyn Asbury and Barbara Rich, 105-116.
Arts & Intersections