Psychometric work with young children faces the particular challenge that children's attention spans are relatively short, and therefore, shorter assessments are required while retaining comprehensive coverage. This article reports on three empirical studies that encompass the development and validation of the research-based early mathematics…

Research Findings: Educators declare their commitment to high-quality education for all children. Science, Technology, Engineering, and Mathematics (STEM) has been increasingly included as critical topics, even for young children. However, there are exceptions, especially the provision of developmentally appropriate STEM experiences to children…