Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleThe problem of documenting systematic nonshared environmental effects directly.AuthorsMcCartney, KathleenPublicationBehavioral & Brain Sciences, 1987, Vol 10, Issue 1, p32ISSN0140-525XPublication typeArticleDOI10.1017/S0140525X00056144