Classical Conditioning

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Pavlov's Experiment

Scroll over or tap the blue words to learn the meanings.

Another picture of Ivan Pavlov
  • dog looking at food, salivating

    First

    (US) leads to an (UR)

    Pavlov gave the dog food (US) and not surprisingly the dog salivated (UR).

  • bell ringing with no response from dog

    Second

    (NS) leads to NO (UR)

    Pavlov rang a bell (NS) and not surprisingly the dog did not salivate (UR).

  • bell ringing and food being presented leads to a dog salivating

    Third

    (CS) + (US) leads to an (CR)

    Pavlov, while ringing a bell (CS) gave the dog food (US) and the dog once again salivated (CR)

  • finally, bell ringing even with no food makes a dog salivate

    Finally

    (CS) leads to an (CR)

    When the bell was rang (CS), the dog salivated (CR) even though food was not present.