Large achievement gaps exist between high-and low-income students and between black
and white students. This article explores one explanation for such gaps: income segregation …

Aim The spatial extent (scale) at which landscape attributes are measured has a strong
impact on inferred species–landscape relationships. Consequently, researchers commonly …

Biochar may contribute to climate change mitigation at negative cost by sequestering
photosynthetically fixed carbon in soil while increasing crop yields. The magnitude of …

Framed by a systemic-ecological model of engagement, this study examined cross-grade
patterns of behavioral engagement in learning over kindergarten and first grade and the …

Multiple-level (or mixed linear) modeling (MLM) can simultaneously test hypotheses at
several levels of analysis (usually two or three), or control for confounding effects at one …

Background Most implementations fail before the corresponding services are ever delivered.
Measuring implementation process fidelity may reveal when and why these attempts fail …

Whereas general sample size guidelines have been suggested when estimating multilevel
models, they are only generalizable to a relatively limited number of data conditions and …

In the context of significant landscape changes, understanding how residents perceive
landscape quality is crucial for landscape policy-making and planning. However, while …

Unavoidable sample size issues beset psychological research that involves scarce
populations or costly laboratory procedures. When incorporating longitudinal designs these …

Corporate anti-corruption initiatives can make a substantial contribution towards curtailing
corruption and advancing efforts to achieve the United Nations' Sustainable Development …