UROP Research Mentor Project Submission Portal: Submission #1253

Overall Research Project Description The current study builds on an existing body of research that states that the language in books is unique when compared to the everyday speech children hear (Cameron-Faulkner and Noble, 2013; Dawson et al., 2021; Montag et al., 2015). While these studies have shed important light on the unique contributions of book language, there are important weaknesses with these studies that are worth considering. The first one being the selection of books being examined. All three corpora used picture books that came from parent recommendations, book review websites, and librarian recommendations. This selection process lacks ecological validity that would come from parent or teacher reports or observations of books they had read to their child(ren). The final weakness of the current corpus work with early childhood picture books is the lack of examination of genre and how this impacts the lexical diversity of a book. If a larger goal of this work is to better understand the stimuli children experience and how it influences their learning, we need to analyze stimuli that most closely resembles what children experience. This study addresses both limitations by analyzing books that we examined early childhood teachers reading in their classrooms and by including genre in analyses of book language.