Over the past few years it has been shown that some (single) early-type stars display polarimetric variability, with the data distributed in the normalized Stokes plane above the usual experimental noise. Presently, in this thesis, a simple point source/point scattering model is developed, which can mimic these distributions. It is found that they should always exhibit at least one axis of symmetry, this being the projection of the stellar equatorial plane onto the sky. In addition the model is extended to involve the effects of stellar rotation and schemes are proposed for investigating the underlying loci in the distributions which lead to determination of stellar periods.