e., predictability) might remain unchanged (because frequency would be sufficient for detecting errors). This account is consistent with the theoretical framework we laid out above. It is also possible, however, that readers may have less ability to selectively change the way they process words in response to task demands. Instead, proofreading could work in a qualitatively similar way as reading for comprehension but demand that subjects become JAK inhibitor more confident than usual in word identities (to rule out visually similar nonword neighbors). Thus, subjects would take advantage of all sources of information

that would help them discern the identity of the word (e.g., the predictability of the word or its fit into the sentence context). Under this more cautious reading account, the amplification of the frequency click here effect in proofreading is just a result of the longer processing time required for higher confidence (e.g., the size of the effects may grow with increasing reading times) and we would expect to see similar changes in predictability effects in response to changes in task. This account would be inconsistent with the theoretical framework we laid out above, which predicts that subcomponent processes are differentially modulated by proofreading in general. Thus,

the task-sensitive word processing account predicts that proofreading for wrong words would amplify predictability effects whereas proofreading for nonwords would not. The more cautious reading account, on the other hand,

predicts that predictability effects would be amplified across the board by proofreading, regardless of the type of proofreading task. Thus, finding differential effects of word predictability as a function of type of proofreading task would support the task-sensitive word processing account, and would imply that readers exhibit substantial cognitive flexibility in adapting reading behavior to task demands. On the other hand, if predictability effects increase in proofreading for both wrong word and nonword errors, it would lend support to the more cautious reading account and suggest that readers change how Glycogen branching enzyme they process words in response to task demands in a global, less sophisticated way. In the present study, we thus had three main goals. The first goal was to confirm the results of Kaakinen and Hyönä (2010) that frequency effects on non-error trials increase in proofreading for nonwords in another language (English). The second goal was to tease apart the task-sensitive word processing and more cautious reading accounts by determining whether predictability effects increase in the same way as frequency effects when subjects are proofreading for nonword errors. These first two goals are tested in Experiment 1. The third goal was to compare how different types of proofreading tasks change these effects (i.e.