Response processes are an important component of validity to support the use and interpretation of test scores. Response processes information can provide insight into how students engage with assessment tasks and the type of errors made when solving items, as well as allow for the study of cognitive properties in items that may be associated with…

Usage-based theories of language development underscore the importance of children using language to learn language. Few investigations have applied usage-based theories to dual language learners (DLLs), who comprise a growing share of children attending early education programs in the U.S. Three studies were carried out to investigate the role of…

There is a growing need for more information regarding the early academic development of preschool-age children who are learning to speak Spanish and English. To achieve this, studies are needed that acknowledge the heterogeneity of language abilities within bilingual preschool children, and that these variations in language abilities may impact…

In recent decades, the share of ethnically and linguistically diverse children enrolled in schools in the United States has exponentially increased. Despite the growing representation of ethnic minority and dual language learner (DLL) children, there is persistent evidence of early vocabulary gaps between low-income and DLL children and their…

By the start of kindergarten, there are already large gaps in achievement between black and Hispanic children and their white peers, between children from lower socioeconomic backgrounds and their higher socioeconomic counterparts, and between dual language learners (DLLs) and their native English-speaking peers. This dissertation examines the…