The Impact of the Presence of a Rival on the Propensity to Engage One’s Own Cognitive Resources in a Discounting Situation. Economic and Political Thought, [S. l.], v. 83, n. 4A, p. 116–146, 2024. Disponível em: https://mysl.lazarski.pl/mysl/article/view/2028. Acesso em: 11 jan. 2026.