  In this paper we apply the usual perturbative methodology to evaluate the
one-loop effective potential in a nonlocal scalar field theory. We find that
the effect induced by the nonlocaliity of the theory is always very small and
we discuss the consequences of this result. In particular we argue that,
looking at one-loop corrections for matter fields, it is not possible to find
signals of the nonlocality of the theory in cosmological observables since,
even during inflation when energies are very high, nonlocality-induced
corrections are expected to be very small.
