This is the The Goldsmiths Musical Sophistication Index, developed in October 2012.
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The Goldsmiths Musical Sophistication Index (Gold-MSI), is an instrument that measures musical sophistication in a comprehensive way by explicitly considering a wide range of facets of musical expertise as they occur in a Western society. The instrument is designed to measure the broad range of individual differences in the general population, while placing less importance on the much smaller pathological groups (e.g. ‘amusics’) and highly specialist populations (professional musicians).
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