Doesn't the reduction happen automatically? We have a built-in imitation module (how much we use it is subjected to conditioning), like we have built-in vision and locomotion modules. From this module, we acquire new behaviours from the environment, which we then keep if they're reinforced or lose if they're punished. A meme is a behaviour picked up this way which 1) leads to others picking up the behaviour and 2) is reinforced.

ISTM that the hard part is how we pick up behaviours, but that this is completely beyond the scope of behaviourism - like it explains why we keep walking, but not why we start learning, let alone proprioception and motor control.