How do adults and children process referentially ambiguous pronouns? This work was partially supported by National Science Foundation grants BCS-4875168 and BCS-0042561 to the second author. We thank the Rutgers University Center for Cognitive Science for use of their eye-tracking facilities provided by the NSF grant. We thank Margaret Sudhakar and Ned Norland for assisting us with preparation and conducting the experiments, Jennifer Venditti for providing her expertise in analysing the materials acoustically, and Gary Winkel for help with the statistical analyses. We also wish to thank the students from Irwing Elementary School (Speech coordinator Ellyn Atherton) and the children from the Yello