Which type of study would be most likely to compare unrelated siblings living in the same household?

Question

Quizplus · Accepted Answer

Adoption studies are designed to compare biological and environmental influences by examining the traits of adopted children in relation to their adoptive families and biological families. In this context, unrelated siblings living in the same household would most likely be part of an adoption study, as it allows researchers to observe the effects of the shared environment on individuals who do not share a genetic background.

Which Type of Study Would Be Most Likely to Compare