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This study experimentally tested 3 hypotheses: (1) Different objects instigate different types of infant action, and (2) caregivers offer contingent verb input, such that (3) infants\u2019 actions temporally align with caregiver verb input. Thirty infant-mother dyads (12\u201322\u2005month-old, 14 girls, 21 White, 4 Black, 2 Asian, 3 Hispanic, 3 Multiracial) played in two conditions\u2014with gross-motor toys to incentivize locomotor play and fine-motor toys to incentivize stationary play. As hypothesized, infant locomotion and caregiver verb use differed by condition. Moreover, infants\u2019 in-the-moment locomotion temporally aligned with caregivers\u2019 verbs. Effects ranged from \u03b72 = .416\u2013.778. Findings provide experimental evidence that objects for play shape infant actions and caregiver verb input.<\/jats:p>","DOI":"10.1093\/chidev\/aacag083","type":"journal-article","created":{"date-parts":[[2026,4,17]],"date-time":"2026-04-17T12:48:30Z","timestamp":1776430110000},"source":"Crossref","is-referenced-by-count":0,"title":["Opportunities for verb learning: Objects, infant locomotion, and verb input"],"prefix":"10.1093","author":[{"given":"Kelsey L","family":"West","sequence":"first","affiliation":[{"name":"Department of Psychology, University of Alabama , Tuscaloosa, AL ,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ramya","family":"Manikkan","sequence":"additional","affiliation":[{"name":"Department of Psychology, University of Alabama , Tuscaloosa, AL ,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karen E","family":"Adolph","sequence":"additional","affiliation":[{"name":"Department of 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