  The concept of effective dynamics has proven successful in LQC, a
loop-inspired quantization of cosmological spacetimes. We apply the same idea
of its derivation in LQC to the full theory, by computing the expectation value
of the scalar constraint with respect to some coherent states peaked on the
phase-space variables of flat Robertson-Walker spacetime. We comment on the
relation with effective LQC and find a deviation stemming from the Lorentzian
part of the Hamiltonian.
