equality paradox has also been used to describe separate claims within the academic literature. Examples include: Usdansky (2011) to describe a claim that "less educated couples with less skilled occupations and less money tend to voice more enthusiasm for specialized gender roles". A conference paper by Klaus and Kroezen (2017) to describe the rule differences by gender in professional tennis. Thelwall and Mas-Bleda (2020) to describe a claim that "countries with a higher proportion of female first-authored journal articles have larger first-author gender disparities between fields". This was based on a "first-author gender comparison of 30 million articles from all 27 Scopus broad fields within the 31 countries with the most Scopus-indexed articles 2014–2018". See also Gender differences Women in STEM fields References Gender equality Gender roles