Galaxy clustering functions: in the upper panel, we show the real- space two-point correlation function, ξ(r), at redshift z_ref = 0.56 for all sub-samples (using their respective colour scheme and line style keys as in Fig. 3) and the parent sample of the SAM-CMASS mock galaxies, Gal-dens (short-dashed black line). In the lower panel we display the fractional difference between the clustering function of each sub-sample (ξ(r)) and that of Gal-dens (ξ(r)_ref).