Results from Experiment 1. Proportion of looks to plural referents for L1 adults (n = 28), L1 children (n = 28), and L2 adults (n = 28) during plural deictic sentences (blue) and singular deictic sentences (purple). Line shading represents one standard error from the mean, averaged by subjects. Vertical dashed lines indicate noun onset. Area shading indicates significant effects from cluster-based permutation analyses (ps < 0.05). Results indicate that L1 adults, L1 children, and L2 adults used the plurality of deictic determiners to predict the plurality of the upcoming referent, as evidenced by anticipatory eye movements generated before the onset of the number-marked noun.