On tune deafness (dysmelodia): frequency, development, genetics and musical background

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Abstract
143th the aid of the Distorted Tunes Test a group of British adults could be established whose melodic aptitude was below a certain level and whom we called tune deaf. They are only a fraction of those popularly called tone deaf. The Distorted Tunes Test is only slightly correlated with pitch discrimination, short term tonal memory or number memory. In children ability to pass the Distorted Tunes Test develops at greatly varying speeds and to a varying degree, reaching stability in adolescence. Tune deafness has a familial distribution and segregates in away suggesting an autosomsl dominant brait with imperfect penetrance. Some degree of positive assortatire mating has been established.
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