ORIGINAL: Augie11
Adverse yaw effects more than just rolls. It effects turns, particularly on certain airfoils with high winged aircraft. As an example, initiating a left aileron turn results in a left bank and turn but the nose of the plane will fight to point to the right giving a 'funny looking' attitude to the plane as it turns. Differential aileron (more up than down) helps eliminate this. Coordinated rudder will also tend to minimize this (rudder in the same direction as the ailerons).