This is the home of the multilab project investigating bilingual and monolingual infants' preference for infant-directed speech. This is a project was conceived as "piggy back" project to the ManyBabies 1 bilingual study ([MB1B][1]), which investigates bilingual infants' preference for infant-directed speech (itself a companion project to [ManyBabies 1 - MB1][2] - with monolingual infants in the same task. To capitalize on infants already coming into the lab for MB1/MB1B as a first study, we plan to test infants in a second study on a gaze following task. Our particular interest is whether monolinguals and bilinguals show different developmental patterns, although we recognize that a large cross-sectional data set on gaze following might be of broader interest as well. Our plan is to focus on the age groups selected for MB1B: 6-9 and 12-15 month-olds. We will use the paradigm and stimuli developed by [Senju & Csibra (2008)][3], focusing on the Experiment 1 eyegaze condition. The study is currently in the final planning stages. If your lab is interested in contributing data to this project, and you have not yet done so, please complete our expression of interest form [here][4]. Any researchers interested in participating in this or other multi-lab projects with bilingual infants, can sign up to our [manybabies-bilingual Google Group][5]. Hypothesis -------- We tested the hypothesis that the challenging nature of bilingual language learning environments enhances bilingual infants’ attention to the eye gaze of a social partner, even in non-linguistic situations. Assessing Language Input -------------- For the purposes of this study, a bilingual infant is one who: - Has been exposed to two languages between 25% and 75% of the time regularly from birth (within the first month of life) - One of those two languages is the community language (e.g., infant hears at least 25% the language heard by monolinguals tested by the lab) - Can be exposed to additional languages (i.e., trilinguals are okay) Laboratories should use a comprehensive assessment to determine percentage input (not just single-question parental report). However, laboratories are free to use their existing protocols relevant to their home bilingual communities. Mentorship and suggested protocols will be available for laboratories without experience in assessing percentage of language input, as needed. Authorship ------- Final authorship on the project will be determined based on final participation in the project via a policy that will allow authorship based on contribution of data, analytic effort, or other organizational contributions. [1]: https://osf.io/zauhq/ [2]: https://osf.io/rpw6d/ [3]: http://goo.gl/VVR3GY [4]: https://docs.google.com/forms/d/e/1FAIpQLSdJSa9tP6v6kusLKnyBFBHCUPKR6REdCgFDyIkNeN08HPqT-A/viewform?usp=sf_link [5]: https://groups.google.com/forum/#!forum/manybabies-bilingual