“…According to Muñiz, Elosua, and Hambleton (2013 ), it is essential to confirm that a measurement instrument allows for the comparison of scores across different population groups. Based on this statement, the factorial invariance of the Spanish version of the SOS-6 was observed between men and women, among people of different ages, between people with and of sexual health, such as attitudes toward sexual fantasies ( Arcos-Romero, Calvillo, & Sierra, 2019 ), subjective orgasm experience ( Arcos-Romero & Sierra, 2019 ), sexual satisfaction ( Calvillo, Sánchez-Fuentes, Parrón, & Sierra, 2019 ) or the double sexual standard ( Álvarez Muelas, Gómez Berrocal, Vallejo-Medina, & Sierra, 2019 ), the short Spanish version of the SOS-6 presents adequate psychometric properties that allow for valid comparisons of the construct among individuals with different characteristics, thus minimizing evaluation bias ( Muñiz & Fonseca-Pedrero, 2019 ).…”