... From a broader perspective, the reward and punishment category of structural features was one of the most widely reported in the overall literature pool, with 34 studies making up 32.08% of the included papers (see Table 5). A substantial number of the studies included discussed evidence related to general reward features with 5 studies associated with GD and 20 associated with a proxy (Aggarwal, Saluja, Gambhir, Gupta, & Satia, 2020;Banks, 2015;Cruz, Hanus, & Fox, 2017;de Albuquerque & Fialho, 2015;Dietrich et al., 2018;Finserås et al., 2019;Goh and Pe-Than EPPLee, 2017;Herodotou et al., 2015;Hsu & Wang, 2018;Karlsen, 2011;King, Herd, & Delfabbro, 2018;Laffan et al., 2016;Land, 2015;Lee et al., 2020;Lewis, 2016;McKernan et al., 2015;Nadolny et al., 2017;Tavakkoli et al., 2014;Westwood & Griffiths, 2010;Wood et al., 2004;Wood et al., 2007;Yang & Quadir, 2018). Within the general reward features categorization, eight studies found evidence of experience points being potentially problematic (Dietrich et al., 2018;Goh and Pe-Than EPPLee, 2017;Herodotou et al., 2015;Hsu & Wang, 2018;Land, 2015;Nadolny et al., 2017;Westwood & Griffiths, 2010;Wood et al., 2004). ...