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Figure S2. Pupil responses in Task 2 of Experiment 2. Left: Mean pupil diameter. Middle: Mean pupil width. Right: Mean pupil height. The black vertical line positioned at 10 s indicates the transition from the control slide to the stimulus slide.

Figure S2. Pupil responses in Task 2 of Experiment 2. Left: Mean pupil diameter. Middle: Mean pupil width. Right: Mean pupil height. The black vertical line positioned at 10 s indicates the transition from the control slide to the stimulus slide.

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Much psychological research uses pupil diameter measurements for investigating the cognitive and emotional effects of visual stimuli. A potential problem is that accommodating at a nearby point constricts the pupil. This study examined to what extent accommodation is a confounder in pupillometry research. Participants solved multiplication problems...

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