Early psychologists thought that all behavior was a the result of conditioning. Today, we know that classical conditioning is only one way for an organism to learn. The Russian physiologist, Ivan Pavlov, studied the process of digestion and the amount of saliva produced in dogs. During his work, he found that if he substituted an alternate substitute for food, the substitute stimulus of the bell would stimulate the production of saliva. The bell alone could stimulate the onset of salivation.
Classical conditioning begins with an innate response that follows an unconditioned stimulus.
A new stimulus is paired with it, and the process is repeated many times. In time, the novel or new stimulus will be sufficient to elicit the innate response. Materials Bell or buzzer that makes a single sound and does not clatter or drown out the reading. Even to simply tap on the side of a beaker will work. As you read the words that are shaded, you will ring a bell or tap an object on the side of a beaker.