Which is a more convincing method for determining whether learning disabilities are inherited: familiality studies the degree to which a certain condition,such as a learning disability,occurs in a single family)or heritability studies comparison of the prevalence of learning disabilities in identical-monozygotic versus dizygotic twins).Why?

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The Answer of Which is a more convincing method for determining whether learning disabilities are inherited: familiality studies the degree to which a certain condition,such as a learning disability,occurs in a single family)or heritability studies comparison of the prevalence of learning disabilities in identical-monozygotic versus dizygotic twins).Why?

Which Is a More Convincing Method for Determining Whether Learning