Purpose: Children from low--socioeconomic status families often perform poorly on standardized vocabulary assessments. The primary purpose of the study was to determine whether lexical diversity as measured by "D" (Malvern, Richards, Chipere, & Durán, 2004) serves as a valid measure of vocabulary in at-risk, low-income, predominantly…

Children vary widely in the rate at which they acquire words--some start slow and speed up, others start fast and continue at a steady pace. Do early developmental variations of this sort help predict vocabulary skill just prior to kindergarten entry? This longitudinal study starts by examining important predictors (socioeconomic status [SES],…

Mathematical learning difficulties can originate at an early age. However, research on young children's math development, especially those who are at risk, is in its early stages. The current study is the first to examine the effects of an activity with an educational e-book on emergent math with 52 preschoolers at risk for learning disability…

Because of the substantial impact on outcomes for children, states and school districts across the country are addressing issues surrounding early learning opportunities and school readiness for young children. Full-day kindergarten plays an important role in both. Colorado has made significant investments in full-day kindergarten as a means of…