ABSTRACT Non-literal interpretations of implausible sentences such as The mother gave the candle the daughter have been taken as evidence for a rational error-correction mechanism that reconstructs the intended utterance from the ill-formed input (…gave the daughter the candle). However, the good-enough processing framework offers an alternative explanation: readers sometimes miss problematic aspects of sentences because they are only processing them superficially, which leads to acceptability illusions. As a synthesis of these accounts, I propose that conscious rational inferences about errors on the one hand and good-enough processing on the other are competing latent processes that simultaneously occur within the same comprehender. In support of this view, I present data from a two-dimensional grammaticality/interpretability judgment task with different types of subtly ill-formed sentences. Both conscious rational inference and good-enough processing predict positive interpretability judgments for such sentences, but only good-enough processing also predicts positive grammaticality judgments. By fitting a lognormal race model jointly to judgments and response latencies, I show that conscious rational inference and good-enough processing, as well as purely grammar-driven processing, actively trade off with each other during reading. Furthermore, individual differences measures reveal that participant traits such as linguistic pedantry, interpretational charity, and analytic/intuitive cognitive styles contribute to variability in the processing patterns.
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