Clustering strength, as a function of redshift for passive galaxies (left panel) and star-forming galaxies (right panel). In each case, the populations are split by mass, with triangles showing the 10^8.6 < M [h^-1 M_⊙] ≤ 10^9.6 range, squares 10^9.6 < M [h^-1 M_⊙] ≤ 10^10.6, ×’s 10^10.6 < M [h^-1 M_⊙] ≤ 10¹¹ and circles M [h^-1 M_⊙] > 10¹¹. The curves give the predictions of the galform model for the different mass bins as indicated in the legend.