Fig. 1From: Measuring public knowledge on nuclear weapons in the post-Cold War: dimensionality and measurement invariance across eight European countriesBifactor measurement model for knowledge on nuclear weapons. Note: The equal sign between loadings on the secondary factors displayed in the bottom of the figure indicates that factor loadings are constrained to equality within a secondary factor. For clarity of presentation, the latent variates y* underlying the observed variables and the arrows representing unique variances are not included in the graphBack to article page