Situational enjoyment is associated with gaze behaviour during reading

Reading enjoyment is typically studied as a stable trait, yet enjoyment fluctuates within individuals. We examined how both trait- and state-level reading enjoyment are associated with engagement and eye movements during naturalistic reading. Seventy-six adults read 40 book synopses, rated their enjoyment, answered comprehension questions, and decided whether to wait to view the book cover, while their eye movements were recorded. Mixed-effects models disaggregated between-participant (trait) from within-participant (state) enjoyment. Both levels predicted greater willingness to wait and higher comprehension. Trait enjoyment was associated with longer passage and total word reading times. State enjoyment was linked to longer passage times, increased word skipping, faster early word processing, and increased regressions, suggesting more efficient first-pass reading accompanied by increased rereading. These findings suggest that momentary fluctuations in intrinsic motivation are systematically associated with differences in reading strategies, indicating a close link between perceived value and the allocation of cognitive resources during text processing.