2.2.1.2.3 - Adoption studies

• Adoption studies compare criminals with their biological and adoptive parents
• Hutchings and Mednick studied 14,000 adopted children
• Hutchings and Mednick concluded a high proportion of boys with criminal convictions had biological parents with criminal convictions
• Mednick found no relationship between the number of criminal convictions of adoptive parents and their children
• Mednick concluded a significant correlation between the number of criminal convictions of biological parents and their offspring