“…Replicating this finding, a study examining the influence of early puzzle play on later spatial ability found sex differences on the CMTT at 4.5 years of age (Levine et al, 2012). However, several other studies have found no consistent sex differences in the spatial skills of preschool through primary school children in a variety of spatial tasks, including mental rotation (e.g., Caldwell & Hall, 1970;Estes, 1998;Frick et al, 2009;Frick et al, 2013;Jahoda, 1979;Jansen & Heil, 2010;Kaess, 1971;Kaplan & Weisberg, 1987;Kruger & Krist, 2009;Kosslyn, Margolis, Barrett, Goldknopf, & Daly, 1990;Lachance & Mazzocco, 2006;Lehmann, Quiaiser-Pohl, & Jansen, 2014;Platt & Cohen, 1981;Verdine et al, 2017). For example, Manger and Eikeland (1998) found no significant sex differences in sixth graders' performance on spatial visualization tasks.…”