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Errors involving universal quantification are common in contexts depicting sets of individuals in partial, one-to-one correspondence. In this article, we explore whether quantifier-spreading errors are more common with distributive quantifiers each and every than with all. In Experiments 1 and 2, 96 children (5- to 9-year-olds) viewed pairs of pictures and selected one corresponding to a sentence containing a universal quantifier (e.g., Every alligator is in a bathtub). Both pictures showed extra objects (e.g., alligators or bathtubs) not in correspondence, with correct sentence interpretation requiring their attention. Children younger than 9 years made numerous errors, with poorer performance in distributive contexts than collective ones. In Experiment 3, 21 native, English-speaking adults, given a similar task with the distributive quantifier every, also made childlike errors. The persistence of quantifier-spreading errors in …