The paradox of explaining: When feeling unknowledgeable prevents learners from engaging in effective learning...

People often need to learn complex information as part of their daily lives. One of the most effective strategies for understanding information is to explain it, for instance to a hypothetical other (Pilots 1 and 2). Yet, we find that learners prefer equally effortful but less effective learning strategies, even when incentivized to perform well (Study 1). Critically, we propose and find that learners' reluctance to explain is tied to their subjective knowledge of the material; learners who feel less knowledgeable about what they learned are most reluctant to explain it, despite the strategy being as effective for them (Study 2). An intervention that increased subjective knowledge (by having learners answer a few easy questions) increased learners' choice to explain, which was mediated by learners believing that explaining would be more pleasant and effective (Study 3). Directly manipulating beliefs about how fun and effective explaining is also boosted learners' willingness to explain (Study 4). Finally, because Studies 1-4 incentivized performance financially, we replicated key results in the classroom with students, finding improved scores on a class quiz (Study 5). The paradoxical implication of these findings is that those who need effective learning strategies the most are the ones least likely to use them. Put together, we find that subjective knowledge plays a key role in learning decisions and that boosting subjective knowledge is a simple intervention that can improve learning-related choices. (PsycInfo Database Record (c) 2025 APA, all rights reserved).