Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleThe Reliability and Correlates of an Achievement Index.AuthorsPrien, Erich P.; Botwin, David E.PublicationEducational & Psychological Measurement, 1966, Vol 26, Issue 4, p1047ISSN0013-1644Publication typeArticleDOI10.1177/001316446602600428