  The oral version of this paper summarized Kormendy & Ho 2013, ARA&A, 51, 511.
However, earlier speakers at this Symposium worried that selection effects bias
the derivation of black hole scaling relations. I therefore added -- and this
proceedings paper emphasizes -- a discussion of why we can be confident that
selection effects do not bias the observed correlations between BH mass M_BH
and the luminosity, stellar mass, and velocity dispersion of host ellipticals
and classical bulges. These are the only galaxy components that show tight
BH-host correlations. The scatter plots of M_BH with host properties for
pseudobulges and disks are upper envelopes of scatter that does extend to lower
BH masses. BH correlations are most consistent with a picture in which BHs
coevolve only with classical bulges and ellipticals. Four physical regimes of
coevolution (or not) are suggested by Kormendy & Ho 2013 and are summarized
here.
