Understanding the Role of Income in Personal Happiness: A Comprehensive PSM Analysis in the United States. The Pakistan Development Review, [S. l.], v. 63, n. 3, p. pp.399–416, 2025. DOI: 10.30541/v63i3pp.399-416. Disponível em: https://thepdr.pk/index.php/pdr/article/view/2973. Acesso em: 10 jan. 2026.