At high AOA, attempts to roll the airplane with aileron result in yaw opposite to the direction of the intended turn or roll. This yaw is partially produced by the drag of the down going aileron; and the dihedral effect, in turn, inhibits the roll. Adverse yaw is more severe at high AOA, and aileron inputs provide very low roll rates. At very high AOA near stall, aileron inputs cause increased adverse yaw and roll opposite to that intended. The natural tendency to raise the wing with aileron should be avoided. A large aileron deflection at the point of departure from controlled flight will increase the probability of spin entry.
In the F-4E with leading edge slats the best roll at high AOA was accomplished by a combination of rudder and aileron in the direction the desired turn.
The F-14, even with its wings swept forward, also required rudder as the primary roll control at high AOA.