Salivation that occurs directly in response to food in the mouth is a natural, reflexive action that does not require any prior learning.

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During his physiological research on the digestive system, Pavlov measured the amount of saliva dogs produced in response to different types of food.

Pavlov's Dog Studies

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020, April 22). Psychology (2nd ed.). OpenStax. https://openstax.org/books/psychology-2e/pages/1-introduction

OpenStax Psychology (2nd ed.) Textbook

Reflexive Salivation

Pavlov observed that over time, dogs began to salivate in response to unnatural stimuli, such as the sight of an empty bowl or the sound of footsteps, indicating an accidental discovery of learning.

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