Toulmin model, developed by Stephen Toulmin in refutation to the universalism (which is a concept about how arguments should be formally proved like that in math so that it is absolute and universal, applying to all people), emphasizes context and possibility rather than rigorous facts. In other words, this model makes the argument from what must happen if something happens to what is likely to happen if something happens under specific context. Before the model was invented, philosophers were obsessed with formal proofs and syllogisms (which are a type of reasoning where a conclusion is drawn from two premises), but Toulmin thought logic that is too accurate lacks actual use in daily life arguments. To this end, Toulmin developed his framework of analyzing arguments. In Toulmin’s model, a probable conclusion is derived from premises and a specific context while exceptions and boundaries of the claim are acknowledged, making it more accurate and convincing while not being universally applicable.
The model consists of 6 parts.
Ground
This is kind of like the premises, evidence or data, commonly a fact that one knows. It could be an observation that a claim is derived from. This is the part that is directly from the real life and does not carry any logic.
Warrant
Warrant is the most important part that differs from formal reasoning. It is a hidden assumption that is assumed to be very likely true, often implicit and usually general rules. It does not require to be proven but rather assumed. Usually this is the part where the logic can be questioned and refuted (people often attack a point not because they disagree with the ground but the warrant), thus it’s important to carefully craft your warrant so that people can easily agree with you.
Backing
Backing strengthens the warrant, explaining why the warrant is assumed in the specific context. It can be experience, authority, statistics, or context itself. Backing makes the argument context-based, not just simply abstract.
Claim
Claim is the idea drawn from warrants and grounds. Note that claim is only an inference.
Qualifier
Qualifiers expresses the strength of the inference, so that the inference is more accurate and convincing. Note: People sometimes forget to add qualifiers to their claim, eventually making their whole argument seem invalid. So it is important to add qualifiers to your claims!
Rebuttal
Rebuttal points out the cases where the claim fails. In other words, it provides exceptions and limits of the claim so that opponents can’t object to your argument.
Examples
A simple example that argues the floor is wet because of the rain:
- Grounds (Evidence): The ground is wet.
- Warrant (Reasoning): If the ground is wet, it usually means it rained.
- Claim (Conclusion): So, it probably rained.
- Qualifier (Certainty): Probably
- Rebuttal (Exception): Unless someone used a sprinkler.
- Backing (Support for warrant): Rain commonly makes outdoor surfaces wet.
Put together:
The ground is wet, so it probably rained, because rain usually makes things wet—unless a sprinkler caused it.
A more complex one that argues that homework should not be assigned:
Homework should generally not be assigned, because excessive homework has been shown to increase student stress and reduce overall well-being (grounds); since learning is most effective when students are mentally healthy and engaged rather than overwhelmed (warrant), and educational research consistently links high stress levels with decreased academic performance and burnout (backing), assigning large amounts of homework is likely to be counterproductive (qualifier). However, this does not mean all homework is harmful, as limited, purposeful assignments—such as brief practice or review—can still reinforce learning (rebuttal).
Compared to a simpler non Toulmin framework:
Homework should not be assigned because it stresses students and is bad for them. Students already have a lot to do, and homework just makes things worse.
See how the Toulmin model makes an argument more convincing and profound.
By utilizing the Toulmin model, writers can greatly enhance the strength of their arguments. People are convinced when they understand the reasoning, accept the assumptions, and see no obvious flaw, and these are what Toulmin addresses directly. Tips: While this model is convincing enough, you should beware that people might still not be convinced when they do not agree with your warrant. So it is important that you build a good warrant that everybody acknowledges.