AUTHOR=Kamarova Sviatlana , Chatzisarantis Nikos L. D. , Hagger Martin S. TITLE=Quadratic Models May Provide a Useful Set of Models that Detect Combined Effects of Achievement Goals on Academic Attainment JOURNAL=Frontiers in Psychology VOLUME=7 YEAR=2016 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2016.00029 DOI=10.3389/fpsyg.2016.00029 ISSN=1664-1078