{'fraction_non_alphanumeric': 0.0315955766192733, 'fraction_numerical': 0.00631911532385466, 'mean_word_length': 4.610619469026549, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Agreement without understanding? The case of third person singular /s/

This study examined the comprehension of third person singular /s/ as a number agreement marker in children speaking Mainstream American English (MAE). Sixty-two MAE-speaking children aged 3-6 years were presented with a comprehension task where they had to focus on the verb as a clue to number agreement. Overall, results showed that only the 5- and 6-year olds were sensitive to third person singular /s/ as an index of subject number in comprehension, despite their earlier command in production. The implications for development of agreement are discussed.