  We have observed the galaxy environments around two complete samples of
radio-loud (steep-spectrum) and radio-quiet quasars (RLQ and RQQ) at 0.5 < z <
0.8 that are matched in B-luminosity, and find that the environments of both
quasar populations are pratically indistinguishable. A few objects are found in
relatively rich clusters, but on average, they seem to prefer galaxy groups or
cluster of approximatly Abell class 0.
  By combining the RLQ sample with samples from the literature, we detect a
weak, but significant, positive correlation between environmental richness and
quasar radio luminosity. This may give us clues about what determines a
quasar's radio luminosity.
