Evaluating Whether a Conclusion is Justified

Some LNAT questions do not ask you to strengthen or weaken an argument but rather to evaluate whether the conclusion is justified by the evidence presented. This requires a different skill: assessing the logical relationship between premises and conclusion, considering scope, certainty, and whether the conclusion goes beyond what the evidence supports. This lesson teaches you to make that assessment systematically.

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What Does "Justified" Mean?

A conclusion is justified if, and to the extent that, the evidence and reasoning presented in the argument provide adequate support for it. A conclusion can be:

Status	Description
Fully justified	The evidence strongly and directly supports the conclusion as stated, with no significant logical gaps
Partially justified	The evidence supports a version of the conclusion but the conclusion as stated goes further than the evidence warrants
Not justified	The evidence does not logically support the conclusion, or the logical gap is too wide