BA410 Unit 10 Translational Research Paper Example

One Pellet Now or Three Pellets Later: A BA410 Unit 10 Translational Research Paper on Delay Discounting

[Student Name]

Purdue University Global

BA410: Introduction to Experimental Analysis of Behavior

Unit 10 Translational Research Paper

[Instructor Name]

[Date]

The writer, the lab, its animals, her cousin and every figure are composite and illustrative; the studies cited are real.

A Choice in the Chamber

The study that occupies most of my mornings as a lab technician this year is about choice and delay. The lab's main study this year asks rats to choose between two levers. Pressing the left lever produces one pellet immediately. Pressing the right lever produces three pellets after a delay that changes across sessions, from zero seconds to sixty. When the delay is short, nearly every rat chooses the larger reward. As the delay grows, rats shift toward the immediate pellet. The point at which a rat switches, its indifference point, shows how much the delayed reward has lost value because of the wait.

The rats differ. Some keep choosing three pellets even at forty seconds; others switch to one pellet at ten. The graduate student running the study calls the second group steep discounters.

What Delay Discounting Is

Delay discounting is the decrease in the subjective value of a reward as the delay to receiving it increases. Odum (2011) reviewed research showing that discounting can be measured in animals and humans with similar procedures, that the decline in value usually follows a hyperbolic shape, falling steeply at first and then more slowly, and that individuals' rates of discounting are fairly stable over time and across different kinds of rewards. She argued that discounting behaves much like a personality trait, which makes it a useful target for research on individual differences.

The same curve that describes when a rat gives up on three pellets describes when a person gives up on a better future.

Discounting and Addiction

Bickel and Marsch (2001) proposed that delay discounting is central to understanding drug dependence. People who use drugs regularly discount delayed rewards more steeply than people who do not, preferring smaller immediate rewards over larger delayed ones more strongly. A drug offers an immediate and powerful reward, while the benefits of not using, such as health, relationships and employment, are delayed and uncertain. Steep discounting makes the immediate reward more likely to win. Bickel and Marsch argued that discounting may be both a risk factor for dependence and a consequence of it, and that interventions should consider it directly.

My cousin, Danny, is 27 and has struggled with alcohol for several years. Last spring, a family friend offered him a job on a construction crew starting in a month, on the condition that he stay sober and pass a test before starting. Danny wanted the job. He also went to a party the next weekend and drank. When I talked with him afterward, he said the job felt far away and the party was right there. Without the research, I would have called that weakness. With it, I saw a steep discounting curve: the job's value, discounted by a month's wait, could not compete with an immediate reward.

A Caution About Labels

It would be easy to turn discounting into a new label, calling Danny impulsive as if that explained everything. Odum's description of discounting as trait-like invites that risk. But the lab data show something important: the same rat that chooses one pellet at a twenty-second delay chooses three pellets when the delay is shortened to five. Discounting describes how value falls with delay, not a fixed flaw. Change the delay, or the size of the immediate and delayed rewards, and the choice changes. For people, that means the environment around a choice matters as much as the person making it, which is a more hopeful conclusion than any label.

Can Discounting Change?

If steep discounting contributes to addiction, a natural question is whether it can be changed. Koffarnus et al. (2013) reviewed research on manipulations that alter delay discounting. They described several approaches that have reduced discounting in some studies, including working memory training, episodic future thinking, in which people imagine specific future events, framing choices to make delays more salient, and treatments for addiction itself, such as contingency management, which provides immediate rewards for drug abstinence. They noted that evidence for lasting changes was still limited and called for more research.

Contingency management offers a practical bridge from the lab. It does not try to change how a person discounts. Instead, it makes the consequences of abstinence immediate, for example by delivering vouchers or prizes each time a person provides a negative drug test. In discounting terms, it moves part of the delayed reward closer in time, so that it can compete with the drug.

What Changed for Danny

The family friend agreed to adjust the arrangement. Instead of a single job offer a month away, Danny started working two days a week right away, paid at the end of each day, with more days added each week he stayed sober. A friend in recovery met him for breakfast before each shift. The reward for sobriety was now immediate and growing. Danny had one slip in the first month, told the family friend about it himself and kept working. He has been working full time for four months.

I do not know which part of the change helped most, and his story is not an experiment. But it fits the logic that runs from the lab's levers to treatment: when delayed rewards lose to immediate ones, making good outcomes arrive sooner can change the choice.

The Lab's Place in the Story

Watching rats choose between one pellet and three, I once wondered what such a study could possibly matter for. The research line I have traced, from animal choice to discounting in humans, to its role in addiction, to treatments that make rewards immediate, is an answer. It is also a reminder that the translation is not automatic. Each step required new research with people, and the most useful interventions, like contingency management, came from applying the principle rather than from changing the discounting itself.

Conclusion

Delay discounting connects a rat's choice in a chamber to a person's choice between a drink tonight and a job next month. Odum's review shows that discounting is measurable and stable, Bickel and Marsch connect steep discounting to dependence, and Koffarnus and colleagues review attempts to change it. For my cousin, an arrangement that made rewards for sobriety immediate turned a principle from the lab into a better month, then several.

References

Bickel, W. K., & Marsch, L. A. (2001). Toward a behavioral economic understanding of drug dependence: Delay discounting processes. Addiction, 96(1), 73-86. https://doi.org/10.1046/j.1360-0443.2001.961736.x

Koffarnus, M. N., Jarmolowicz, D. P., Mueller, E. T., & Bickel, W. K. (2013). Changing delay discounting in the light of the competing neurobehavioral decision systems theory: A review. Journal of the Experimental Analysis of Behavior, 99(1), 32-57. https://doi.org/10.1002/jeab.2

Odum, A. L. (2011). Delay discounting: I'm a k, you're a k. Journal of the Experimental Analysis of Behavior, 96(3), 427-439. https://doi.org/10.1901/jeab.2011.96-423