Figure 2.

Mean-adjusted peak pupil size associated with comprehension of SR and OR sentences with a short or long gap distance between the agent performing an action and the action being performed. Data are shown for young adults with normal hearing acuity (left panel), older adults with clinically normal hearing for speech (middle panel), and older adults with a mild-to-moderate hearing loss (right panel). Error bars represent one standard error.

OR = object-relative; PPD = peak pupil dilation; SR = subject-relative.