Preregistration for: Maternal bilingualism and the use of partial self-repetitions in child-directed speech in an onscreen wordless picture book sharing task

Li and Onnis (2021) have previously found that use of parental partial repetitions varies with mother’s degree of bilingualism. The primary aim of this study is to replicate these results in a new sample of Singaporean mothers who read to their children using a novel onscreen wordless picture book titled, ‘Little Orangutan: What a Scary Storm!’ (Styles, 2020). Successful replication of results will significantly contribute to this field of research and confirm the generalisability of this effect to a virtual modality. The secondary aim would be to test if a new metric of maternal bilingualism, Language Entropy (Gullifer & Titone, 2020), would reveal a better fitted model for partial repetition outcomes. Version 2.1 updated the proposed models prior to analysis of results (results-blind). Version 2.2 un-restricted the previously embargoed documents.