 So, a spontaneous recovery is when you put a behavior on extinction after the subsequent extinction phase and or burst after a period of time the behaviors try to come back into play to meet reinforcement and or something like that and that is the spontaneous recovery. The moment where we haven't seen a set of behaviors that we put on extinction a while ago all of a sudden seem to come back out of nowhere and or spontaneously is a spontaneous recovery. The key point is to keep extinction still in effect. The moment spontaneous recovery happens if it doesn't meet extinction we can go right back to where we started. I've had several examples of kids screaming or hitting to get certain items for instance instead of saying hey can you share with me they just walk up and punch a kid we put that on extinction the moment they hit a kid they don't get access to anything as long as we keep extinction in effect we got behavior under control down to zero rates occasionally would get an attempt and or spontaneous recovery but extinction was still in effect in the clinic setting so per the treatment setting of 48 days they were no longer hitting kids for toys.