“…This evidence comes from experimental research on classroom-based interventions (e.g. Feagans and Fendt, 1991; Wasik and Hindman, 2011), book-reading interventions (Collins, 2016; Hammer and Sawyer, 2016; Huebner and Meltzoff, 2005; Valdez-Menchaca and Whitehurst, 1992), and also observational research conducted in Head Start as well as public preschool programs and elementary schools, including ethnically and linguistically diverse samples (Anderson and Phillips, 2017; Cash et al, 2019; Dickinson and Smith, 1994; Downer et al, 2012; Hamre and Pianta, 2005; Stipek et al, 1998). These studies examined various cognitive, language, and motivational outcomes, providing robust evidence that an overemphasis on lower level instruction is detrimental for low-income children and an emphasis on higher order thinking skills is especially beneficial.…”