Distributions of log (Lum [OIII] /L_⊙) for barred AGN (solid lines) and unbarred active galaxies (full surfaces) with different group-centric distances: d_CG< 500 kpc h^-1 and d_CG> 500 kpc h^-1 (upper and middle panels, respectively). Lower panel shows mean ⟨ log (Lum(OIII) /L_⊙) ⟩ as a function of group-centric distance, d_CG, for AGN galaxies with and without bars in groups (solid and dashed lines, respectively).