We use a recently formulated fluid theory of turbulent Farley-Buneman waves to study the impact of anomalous transport coefficients on the aspect angles of large-amplitude waves in the high-latitude E region in the strong nonlinear regime. The theory is self-consistent and contains all the nonlinearities of the system except for the generation of unstable secondary waves through a two-step process, which has been studied elsewhere. Our study leads us to conclude that nonlinear processes are responsible for an increase in the aspect angles of large-amplitude waves through an increase in the scattering of electrons in the direction parallel to the geomagnetic field in conjunction with a lack of any significant increase in the scattering of electrons by waves in the plane perpendicular to the geomagnetic field. ¿ American Geophysical Union 1995