The russian physiologist ivan pavlov discovered that "dogs would salivate to the sound of a ticking metronome due to a learned reflexive response called conditioning".
Amid the 1890s, Russian physiologist, Ivan Pavlov was taking a gander at salivation in dogs in light of being bolstered when he saw that his dogs would start to salivate at whatever point he went into the room, notwithstanding when he was not bringing them sustenance.
In any case, when Pavlov found that any question or occasion which the dogs figured out how to connect with sustenance, (for example, the lab partner) would trigger a similar reaction, he understood that he had made a critical logical revelation. As needs be, he given whatever is left of his vocation to concentrate this kind of learning.
