The Use of Player-centered Positive Reinforcement to Schedule In-game Rewards Increases Enjoyment and Performance in a Serious Game. International Journal of Serious Games, [S. l.], v. 1, n. 4, 2014. DOI: 10.17083/ijsg.v1i4.47. Disponível em: https://journal.seriousgamessociety.org/index.php/IJSG/article/view/47.. Acesso em: 18 jul. 2024.