Strengthening by Supporting Premises

The most intuitive way to strengthen an argument is to provide additional evidence for its existing premises. If an argument's premises are better supported, the foundation of the argument becomes more secure, and the conclusion becomes more probable. This lesson examines how this works in practice, with particular attention to the types of supporting evidence that the LNAT rewards you for recognising.

---

How Supporting Premises Strengthens an Argument

An argument's strength depends partly on the credibility of its premises. If a premise rests on limited or questionable evidence, the argument is vulnerable. Providing additional evidence for that premise removes a weakness and makes the argument harder to attack.

Structure