Another possible explanation why we do not observe the category centers of the bilingual participants in the middle of the monolingual centers, could be the rather short distance between the monolingual category centers. Even a small deviation of one of the bilingual category centers from the straight line connecting the monolingual centers causes an increased ratio of the indirect distance to the direct distance. If we take into account the distances between the monolingual category centers in the interpretation of the ratios in Figure 7, there is a significant relation between the distance between monolingual centers and the ratios of the indirect distance to the direct distance between monolingual category centers both for boundary dependent and boundary independent calculations. Spearman rank order correlations over 2–7 dimensions show that the larger the distance between monolingual category centers, the smaller the ratio both for boundary dependent (rs = -0.60, p < 0.001) and boundary independent (rs = -0.73, p < 0.001) calculations. This is an indication that, for the categories with a small difference in distance between monolingual category centers, the ratios of the indirect distances to the direct distances are not reliable and therefore not interpretable.