BA410 Unit 4 Pavlovian Applications Paper Example

The Parking Lot That Made My Mother Sick: A BA410 Unit 4 Pavlovian Applications Paper

[Student Name]

Purdue University Global

BA410: Introduction to Experimental Analysis of Behavior

Unit 4 Pavlovian Applications Paper

[Instructor Name]

[Date]

The writer, her family and the lab are composite; the studies cited are real.

Two Symptoms Without a Cause

My part-time lab job taught me about conditioning long before my own family needed the lesson last winter. Last winter, my mother began chemotherapy for ovarian cancer, with infusions every three weeks at a regional cancer center forty minutes from our home. After her third infusion, something strange happened. As we pulled into the center's parking lot for her fourth infusion, she said she felt sick, and she vomited before reaching the door. No drug had been given. Around the same time, she stopped eating chicken noodle soup, which she had always loved and which I had made for lunch before her first infusion. Just the smell made her queasy.

Her oncology nurse called both symptoms common and said many patients feel embarrassed by them, as if they were imagining things. What I had learned in this course told me why they happen and why they are not imagined.

Anticipatory Nausea

Bovbjerg et al. (1990) studied women receiving chemotherapy for ovarian cancer. They found that some women developed nausea before treatment, in response to the hospital environment, and that the hospital setting also became associated with changes in immune function measured before infusions. They interpreted these anticipatory responses as products of Pavlovian conditioning: the clinic's sights, smells and routines were repeatedly paired with the drugs' effects and came to elicit some of those effects on their own.

My mother's experience fits that pattern exactly. The unconditioned stimulus was the chemotherapy itself, which causes nausea, the unconditioned response. The parking lot, the building and the infusion room, present before every infusion, were paired with the drug and became conditioned stimuli. By the fourth cycle, the parking lot alone elicited nausea, a conditioned response.

My mother's nausea in the parking lot was not imagined or weak; it was a learned response as real as the one the drugs produced.

Taste Aversion

The soup is a different but related case. Garcia et al. (1955) exposed rats to gamma radiation, which causes illness, while they drank saccharin-flavored water. Afterward, the rats strongly avoided the saccharin, even though the illness came well after the taste and the taste itself was harmless. Later work by Garcia and others showed that taste aversions can form after a single pairing and with long delays between taste and illness, unlike most conditioning, which typically requires close timing.

My mother's soup aversion fits. She ate the soup about an hour before her first infusion, then became very sick that evening. One pairing was enough, despite the delay. Oncology teams now sometimes suggest that patients avoid favorite foods before treatment, or eat an unusual food, so that any aversion attaches to something they will not miss.

Overdose and the Setting

Pavlovian conditioning also shapes drug tolerance. Siegel et al. (1982) repeatedly dosed rats with heroin in one setting, then tested a high dose either in the same environment or in a different one. Rats tested in the new environment were much more likely to die. The authors proposed that cues associated with drug use come to elicit compensatory responses that counteract the drug's effects, so tolerance is partly tied to the setting. In a new setting, without those cues, the same dose has a stronger effect.

The finding helps explain, in part, why some overdoses occur when people use their usual dose in an unfamiliar place, and it informs harm reduction advice, such as using smaller amounts in unfamiliar places and never using alone.

Attitudes

Pavlovian conditioning can even shape how people feel about words and groups. Staats and Staats (1958) presented national names, such as Dutch and Swedish, repeatedly paired with words of positive or negative meaning. Participants later rated the names more positively or negatively depending on the words they had been paired with, though they were not aware of the pattern. The study suggests that some attitudes can be acquired through repeated pairing rather than direct experience.

Limits of the Explanation

Not every symptom my mother had was conditioned. Some of her nausea between infusions came from the drugs themselves, and her fatigue and loss of appetite had physical causes that conditioning cannot explain. The Pavlovian account applies specifically to responses that appear before or apart from the drug, in the presence of stimuli that were paired with it. Separating the two mattered for her care: the nurse needed to know which symptoms were drug effects that might call for a dose change and which were anticipatory responses that could be managed with timing, medication before travel and changes in the setting. The lab taught me to ask what a response is under the control of, and that question turned out to be useful at a kitchen table too.

There is also a limit in how far rat studies can be carried to people. Garcia's rats and Siegel's rats did not understand what was happening to them. My mother did, and knowing that her parking lot nausea was learned seemed to make it less frightening, something no rat study could have predicted.

What We Changed

Understanding my mother's symptoms as conditioned changed how we handled them. Her oncologist prescribed an anti-nausea medication to take before leaving home, not only at the clinic. We varied the route and the parking spot each visit, and I brought music she liked to play in the car, hoping to pair the drive with something pleasant. Before infusions, she ate plain crackers rather than any favorite food, so that any new aversion would attach to something she would not miss. Her parking lot nausea did not disappear, but it lessened over the remaining cycles, and her love of chicken noodle soup slowly came back after treatment ended, as respondent extinction would predict when the soup was eaten without illness.

Conclusion

My mother's nausea in a parking lot and her aversion to soup are textbook Pavlovian conditioning, explained by research ranging from irradiated rats to women in chemotherapy. The same process, studied by Siegel and by Staats and Staats, shapes drug tolerance and even attitudes. Recognizing the conditioning did not cure her symptoms, but it helped us reduce them and understand that they were learned responses rather than signs that the treatment was failing.

References

Bovbjerg, D. H., Redd, W. H., Maier, L. A., Holland, J. C., Lesko, L. M., Niedzwiecki, D., Rubin, S. C., & Hakes, T. B. (1990). Anticipatory immune suppression and nausea in women receiving cyclic chemotherapy for ovarian cancer. Journal of Consulting and Clinical Psychology, 58(2), 153-157. https://doi.org/10.1037/0022-006X.58.2.153

Garcia, J., Kimeldorf, D. J., & Koelling, R. A. (1955). Conditioned aversion to saccharin resulting from exposure to gamma radiation. Science, 122(3160), 157-158. https://doi.org/10.1126/science.122.3160.157

Siegel, S., Hinson, R. E., Krank, M. D., & McCully, J. (1982). Heroin "overdose" death: Contribution of drug-associated environmental cues. Science, 216(4544), 436-437. https://doi.org/10.1126/science.7200260

Staats, A. W., & Staats, C. K. (1958). Attitudes established by classical conditioning. The Journal of Abnormal and Social Psychology, 57(1), 37-40. https://doi.org/10.1037/h0042782