The experiments of Ivan Pavlov required several pairings of the neutral stimulus (e.g., a ringing bell) with the unconditioned stimulus (i.e., meat powder) before the neutral stimulus elicited a response.
Ivan Pavlovi eksperimendid nõudsid korduvaid neutraalse stiimuli (nt helisev kelluke) esitamist tingimata stiimuli (nt lihapulber) suhtes enne, kui neutraalne stiimul vastuse tekitas.