Upper panel: star formation rate plotted in four bins of redshift for the complete sample of quasars. We adopt different criteria for separating strong-outflow (small magenta points) and weak-outflow galaxies (small green points), respectively higher and lower than the median value of the distribution of the three parameters (ν_blue (first panel), Δν_offset  (second panel), and Δν_{σ [O III]} ). Bottom panel: same as top, but excluding radio loud quasars.