Children's comprehension of distributive universal quantification

- Children and adults assign cumulative interpretations to sentences with everyNPs.
- Children don't always exploit singular agreement as cue to distributive interpretation.
- A Checking Theory model explains children's performance with every.

Our study explores why children are prone to assign a wider range of interpretations to sentences with distributive universal quantifiers each and every than adults. Musolino (2009) proposed that children are more permissive than adults because they are prone to assign quantifier spreading interpretations to universally quantified sentences. Our results support the alternative hypothesis that children are more permissive because they are prone to assign cumulative interpretations to universally quantified sentences in a wider range of contexts than adults. Our results reveal that both children and adults assign cumulative interpretations to sentences with universally quantified objects (Three cowboys are pulling every horse), but children also tend to assign cumulative interpretations to sentences with universally quantified subjects (Every cowboy is pulling two horses). We show that children perform similarly with sentences with universally quantified NPs and sentences with numerical NPs (Three cowboys are pulling two horses). We argue that children are more permissive than adults because they are less likely than adults to perceive singular subject-verb agreement as a cue to distributive interpretation. We present a formal semantic model to explain our findings and discuss the implications of our model for recent acquisition research.