e/Minnesota Twin Family Study

Information
has gloss	eng: The Minnesota Twin Family Study (or MTFS) is a longitudinal study of twins conducted by researchers at the University of Minnesota - Twin Cities. It seeks to identify the genetic and environmental influences on the development of psychological traits. It is one of the oldest, most widely respected psychological studies in the world.
lexicalization	eng: Minnesota Twin Family Study
instance of	(noun) either of two offspring born at the same time from the same pregnancy twin