  We visually and quantitatively determine the host galaxy morphologies of 94
intermediate redshift (0.2 < z < 1.2) active galactic nuclei (AGN), selected
using Chandra X-ray and Spitzer mid-infrared data in the Extended Groth Strip.
Using recently developed morphology measures, the second-order moment of the
brightest 20% of a galaxy's flux (M_{20}) and the Gini coefficient, we find
that X-ray-selected AGN mostly reside in E/S0/Sa galaxies (53^{+11}_{-10}%),
while IR-selected AGN show no clear preference for host morphology.
X-ray-selected AGN hosts are members of close pairs more often than the field
population by a factor of 3.3+/-1.4, but most of these pair members appear to
be undisturbed early-type galaxies and do not tend to show direct evidence of
gravitational perturbations or interactions. Thus, the activation mechanism for
AGN activity remains unknown, even for pair members.
