"Fully developed stalls"

[gismo]

Sorry Ron, the power curve has squat to do with this. The pitch down occurs because the lift has decreased past what the elevator down force is countering. A pitch down only necessarily occurs at the point of the stall in a steady state, if you are increasing the aft stick, there's not necessarily a pitch down. The main wing doesn't completely stop flying at the stall point, the AOA to lift relationship just reverses.

When a wing stall occurs, the AoA rises past the "critical AoA" (i.e. that which provides the most lift for a given airspeed) AND the resulting increase in vertical speed INCREASES the AoA further producing an even greater decrease in lift force. That is what causes the "bottom dropping out" feeling that accompanies a fully developed stall and it's the airplane's nose down pitch change that prevents this from escalating into a situation where the only main wing lift is the result of form drag.

So I'd have to say that Ron's interpretation is technically more correct in that unless there is a resulting decrease in pitch attitude (kinda hard to imagine anything else that would limit the AoA on the back side of the lift vs AoA curve) the wing hasn't really "stalled".