Taste aversion#Stimulus generalization

As stimulus generalization is referred to in behavioral research, the response of an animal to a stimulus, which is done in exactly the same way as the previously learned response to another similar appeal.

Ivan Petrovich Pavlov was this 1927 described as follows:

Another example is known from experiments with pigeons: Has taught them to show a specific response to a tone of 1000 Hz, so they show the same reaction on a tone of 300 Hz

The opposite of stimulus generalization is the stimulus differentiation.