  We present a new computation of the renormalized graviton self-energy induced
by a loop of massless, minimally coupled scalars on de Sitter background. Our
result takes account of the need to include a finite renormalization of the
cosmological constant, which was not included in the first analysis. We also
avoid preconceptions concerning structure functions and instead express the
result as a linear combination of 21 tensor differential operators. By using
our result to quantum-correct the linearized effective field equation we derive
logarithmic corrections to both the electric components of the Weyl tensor for
gravitational radiation and to the two potentials which quantify the
gravitational response to a static point mass.
