Mind & EverydayFact
Playing Mozart doesn't make your child smarter. Nobody claimed it did.
In 1993 Rauscher and colleagues found a brief gain on one spatial subtask that faded after about 15 minutes; IQ was never measured. A 2010 meta-analysis by Pietschnig and colleagues found only tiny effects and signs of publication bias.
Useful: When a finding gets sold as a product, go back and check what was actually measured.
Source: en.wikipedia.org