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Kathleen M. Eberhard studies psycholinguistics, especially the production of language and coordination during conversation. Her Notre Dame profile identifies research on subject-verb grammatical agreement, including a theoretical account and computational model published in 2005. It also documents her contribution to the visual world paradigm, which times listeners' fixations to objects during spoken comprehension.^[ref]

These questions make grammar experimentally observable. For an illustrative production task, compare a singular head followed by a singular modifier with the same head followed by a plural modifier, while holding the intended grammatical agreement fixed. Errors and response timing can help discriminate accounts of how speakers build the utterance. This is a schematic experimental contrast, not a numerical result attributed to her work. Her institutional research statement also connects language production to bilingualism and the coordination of understanding in dialogue.

Michael K. Tanenhaus is a researcher in psycholinguistics associated with the University of Rochester. Its directory identifies his interests in language and reading comprehension and his emeritus appointment in brain and cognitive sciences and linguistics.^[ref]

With Michael Spivey, Kathleen M. Eberhard and Julie Sedivy, he developed experiments connecting eye tracking to interpretation of spoken instructions. Their 1995 study used real objects and a head-mounted tracker; varying the visible referents altered how a temporarily ambiguous instruction was interpreted.^[ref] This visual world paradigm makes the time course of sentence comprehension experimentally accessible. A fixation is evidence about allocation of attention during a controlled task; it must be interpreted through the alternatives available to the participant.