“…As shown in Figure 6, the five items in the rectangles represent observed variables designed to measure , here, math ability. Chen & Anthony, 2003;Christensen et al, 1999;Finch, 2005;Fleishman, Spector, & Altman, 2002;Gelin, 2005;Grayson, Mackinnon, Jorm, Creasey, & Broe, 2000;Hagtvet & Sipos, 2004;MacIntosh & Hashim, 2003;Mast & Lichtenberg, 2000; O. Muthén, Kao, & Burstein, 1991;Oishi, 2006;Schroeder & Moolchan, 2007;Shih & Wang, 2009;Wang & Shih, 2010).…”