publicaciones seleccionadas artículo Learning losses during the COVID-19 pandemic: Evidence from Mexico 2024 Wealth Gradients in Early Childhood Cognitive Development in Five Latin American Countries 2015 documento de trabajo Wealth Gradients in Early Childhood Cognitive Development in Five Latin American Countries 2019 Wealth Gradients in Early Childhood Cognitive Development in Five Latin American Countries 2015 Wealth Gradients in Early Childhood Cognitive Development in Five Latin American Countries 2014-04