The National Association of Music Teachers Is Interested in the Extent

The National Association of Music Teachers is interested in the extent to which musical ability is influenced by genetic and environmental factors.
Design two studies, a twin study and an adoption study, to examine this issue. For each study, discuss which groups of participants you would compare. Describe what results would lead you to conclude that musical ability is influenced to a large degree by genetic factors and what results would lead you to conclude that musical ability is influenced to a large degree by environmental factors.