Matthew A. Diemer is a developmental psychologist who examines how young people analyze, negotiate, and challenge racial, ethnic, socioeconomic and other constraints in school, college, work, and civic/political institutions. He is particularly interested in how marginalized people develop critical consciousness, which is a careful analysis of societal inequalities, the motivation to produce social change, and participation in social or political action to challenge inequality. His most recent work articulates guiding principles for Critical Quantitative (CritQuant) methodology and anti-racism in measurement.