Responding to the potential of a new neutron-beam method for studying the time-dependent properties of magnetic fluctuations, well suited for quasi-two-dimensional magnets, we predict the form of the signal for scattering by paramagnetic materials. The model used is expected to describe and related quasi-two-dimensional magnets, with an Ising-like character. Calculations are made using the coupled-mode theory of spin fluctuations. Applied to an isotropic Heisenberg model, results from the theory are not the same as those stemming from Fick's Law for spin diffusion . For we predict out-of-plane fluctuations to be the same as for the Heisenberg model, and in-plane fluctuations to be different and an exponential function of time.