1) A study from 1993 found that listening to Mozart's music led to temporary improved spatial reasoning skills in adults, but this effect was not replicated by other researchers.
2) A more recent 2010 study found higher effects from studies conducted by the original researchers compared to other groups, indicating potential bias. There is little evidence left that Mozart's music specifically enhances performance.
3) A politician proposed funding to make music available to young children to help brain development, citing the Mozart effect research. However, the Mozart effect has not been reliably shown.