Final answer:
Jon developed an aversion to hamburgers but not to the television program Small Wonder because of taste aversion conditioning. This type of conditioning occurs when there is an interval between ingesting something and experiencing nausea or illness. Jon's negative experience with the contaminated hamburger caused him to associate the taste of hamburgers with feeling sick, leading to his aversion.
Step-by-step explanation:
The reason that Jon developed an aversion to hamburgers but not to the television program Small Wonder is because of taste aversion conditioning. Taste aversion conditioning is a type of conditioning in which an interval of several hours may pass between the conditioned stimulus (something ingested) and the unconditioned stimulus (nausea or illness).
When Jon ate the contaminated hamburger, he became sick afterwards, creating an association between the taste of the burger and feeling sick. This one negative experience caused Jon to develop an aversion to hamburgers, as a way of protecting himself from potentially harmful food. However, since he was watching a TV show and not eating it while feeling sick, he did not develop an aversion to the television program.