We did not include the third factor (externally oriented thinking) because, apart from not being exactly what we were trying to assess, a number of cross-cultural studies (Páez et al., 1999; Taylor, Bagby, & Parker, 2003) have found that this factor is the one which generates most problems when carrying out and obtaining optimum values from the initial confirmatory factorial analysis (considering all three factors); this is consistent with the low reliability indexes obtained by this factor in various different studies (Bagby et al., 1994; Martínez-Sánchez, 1996).