How can we validate tests for consciousness beyond healthy adult humans? Bayne and colleagues propose the ‘iterative natural kind strategy’ (INKS) [1]. INKS begins by taking seriously all tests with at least some face validity rather than restricting our attention to a small subset of tests that antecedently pass stringent requirements of validation. We then look for clustering among our tests (and mechanisms explaining such patterns), using these findings to refine our battery of tests. Subsequently, we apply the same process to the new battery.
