Sensitivity

In the context of accessibility evaluation, sensitivity (also called recall or thoroughness) is the proportion of true accessibility problems that are successfully identified and reported by an evaluator. High sensitivity means that most real barriers are found, while low sensitivity means many genuine issues are missed. Sensitivity is distinct from correctness (precision): an evaluation can have high sensitivity but low correctness if it finds most problems but also reports many false positives, or high correctness but low sensitivity if what it reports is accurate but it misses many real issues. Both metrics together determine the overall effectiveness of an accessibility evaluation method.