Predicted overall bias for a luminosity limited local (z ≈ 0) type 1 AGN sample as a function of the low luminosity limit (in logarithmic units). The solid line shows our prediction for σ = 0.3, while the dashed lines show the predictions for σ = 0.4 (upper line) and σ = 0.2 (lower line). The dotted line shows the prediction from Lauer et al. (2007), but for our local AGN luminosity function; see text for an explanation of the differences.