We present the results of a novel early childhood intervention in which disadvantaged 3-4-yearold children were randomized to receive a new preschool and parent education program focused on cognitive and non-cognitive skills (CogX) or to a control group that did not receive preschool education. In addition to a typical academic year (9 month)…

This appendix provides additional details on the underlying data, statistical models, and results presented in "The Big Lift Descriptive Analyses: Progress across Three Kindergarten Classes." First the authors describe how they created each control and outcome variable and its source (e.g., parent report), followed by an overview of the…

The Big Lift™ (Big Lift), a collective impact initiative extending from preschool through third grade in San Mateo County, California, aims to boost reading proficiency and kindergarten readiness through four programmatic pillars: High-Quality Preschool, Summer Learning, Attendance, and Family Engagement. In this report, the authors present…

The goal of this study was to examine the extent to which preschoolers with externalizing behavior problems (EBP) can identify behaviors indicative of callous-unemotional (CU) traits among their peers. Participants for this study included 86 preschool children (69% boys; M[subscript age] = 5.07 years) with at-risk or clinically elevated levels of…