Well, Pavlov need not be jealous, IMHO.
Behavioral Psychology is the basis for all scientific psychology. Typical that someone doesn’t want to give Pavlov credit, as that has been the case all along. It was the first time scientific method had been applied to psychology, and now we use it all the time without even thinking about it.
It became one of those “of course” things: We decided we knew it all along, but we didn’t. In fact there was a lot of controversy about applying scientific method to human behavior