“…1016/j.jecp.2010.04.002 (see Diakidoy, Vosniadou, & Hawks, 1997;Samarapungavan, Vosniadou, & Brewer, 1996;Vosniadou, 1994Vosniadou, , 2002Vosniadou & Brewer, 1992;Vosniadou, Skopeliti, & Ikospentaki, 2004) or whether their knowledge is mainly fragmented before they acquire scientific theory (see Nobes et al, 2003;Siegal, Butterworth, & Newcombe, 2004;Straatemeier, van der Maas, & Jansen, 2008). Another related question has focused on the extent to which methods used in collecting and analyzing the data influence the outcome (i.e., either models or fragments of knowledge) (see Panagiotaki, Nobes, & Banerjee, 2006;Panagiotaki, Nobes, & Potton, 2009).…”