“…One study (Spotts & Mackler, 1967) indicated that the sample was composed of undergraduate students and one study (Noppe & Gallagher, 1977) of education majors. In addition, one study reported only the percentage of gender (Lei et al, 2021). Only one study involved children (Saracho, 1992), one pre-adolescent (Saurenman & Michael, 1980), two adolescents (Baranovská et al, 2017;Lei et al, 2021), three young adults (Miller, 2007;Noppe & Gallagher, 1977;Spotts & Mackler, 1967), whereas one study focused on both adolescents and young adults (Li et al, 2020).…”