Maximum apparent component velocities for all γ-ray detected CJF sources as a function of their γ-ray luminosity, for all sources (left panel) and for high-significance values of β_app,max (right panels; see text for details). We distinguish between γ-variable (filled symbols) and non-variable sources (open symbols), and between the different AGN classes, i.e., BL Lacs (circles), quasars (squares), and radio galaxies (diamonds). We used the kinematic data from Britzen et al. (2008).