Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleTwin studies, environment differences, age changes.AuthorsLoehlin, John C.PublicationBehavioral & Brain Sciences, 1987, Vol 10, Issue 1, p30ISSN0140-525XPublication typeArticleDOI10.1017/S0140525X00056119