... For example, it has been tested in Iranian couples (Ghanbarian et al., 2020), Spanish adults (Rodríguez-González et al., 2016, Chinese college students (Lu, 2019;Zhu, 2019), middle-eastern population (Sadeghi et al., 2020), Israeli population (Nicolai et al., 2016) and Chinese adults (Du, 2015). In addition, there were also many cross-disciplinary studies had been done on self-differentiation, such as organizational commitment (Sloan et al., 2017), religion (Frederick et al., 2016), marital conflicts counselling (Karkhaneh et al., 2016), psychological wellness (Lahav et al., 2016;Teixeira & Pereira, 2015), academic commitment (Human-Vogel & Rabe, 2015), social adaptation (Hao, 2020), psychological adjustment (Moral et al., 2021), mental health (Priest, 2017) and parenting (Ragelienė & Justickis, 2016). ...