Purpose: The authors examine how adults use linguistic information from verbs, direct objects, and particles to interpret an event description as encoding a logical endpoint to the event described (in which case, it is telic) or not (in which case, it is atelic). Current models of aspectual composition predict that quantity-sensitive verbs combined with quantized objects produce telic predicates. Behavioral results from previous experiments have not unequivocally confirmed this prediction. The study presents a more fine-grained analysis that examines the influence of partitive verbs, resultative particles, and different determiner types on listeners' evaluations of verb phrases as telic or atelic. Method: Forty-eight English-speaking adults participated in a truth-value judgment task to determine whether they interpreted verb phrases with different types of verbs and direct objects as telic or atelic. Participants viewed short videos and responded to a yes/no question after each one. Results: The presence of partitive quantity-sensitive verbs and the presence of a definite determiner versus a cardinal number in quantized direct objects had a differential impact on listeners' interpretations of sentences as telic. Conclusion: The results indicate that actual behavioral interpretations of telicity are meaningfully influenced by the presence of partitive verbs, resultative particles, and different types of determiners.