Though tip-of-the-tongue (TOT) states are traditionally viewed as instances of retrieval failure, some suggest that they are a unique form of retrieval success. The state indicates the presence of something relevant in memory as opposed to nothing. TOTs potentially present an opportunity to indicate that more knowledge is present than is currently accessible, which might have relevance for how tests are designed. The present study investigated this. During TOT states, participants were more likely to risk requesting a later multiple-choice set of potential answers when a point loss penalty for wrong answers would occur; they were also more likely to actually choose the correct multiple-choice answer. A test designed for differential point gain or loss through strategic use of TOT states during word generation failure resulted in a point gain advantage compared to standard multiple-choice type testing. This pattern presents a proof of concept relevant to designing adaptive tests.
Keywords: adaptive testing; cognitive bias; metacognition; metamemory; tip-of-the-tongue state.