Asymmetric quantities in elastic scattering of electrons by optically active molecules, collectively denoted as A, and A,, have been treated within the potential scattering model; the direct and spin-orbit interactions are partitioned by constituent atoms. In-plane components of the W(θ) function, which account for A,,, have been discussed from a general point of view. Interference structure will always be observed in the angular dependence of the components. Since the energy as well as angular dependence of the components are determined by interferences that are nearly destructive, the values of the components are inevitably very sensitive to approximation schemes adopted. A comparison with other interference phenomena is also made.