Comparing Writing Speed and Quantity with Sign Pens and Ballpoint Pens: An Experimental Analysis. American Journal of Human Psychology, [S. l.], v. 3, n. 1, p. 14–19, 2025. DOI: 10.54536/ajhp.v3i1.4190. Disponível em: https://www.e-pallipublishers.com/index.php/ajhp/article/view/4190. Acesso em: 17 jun. 2026.