... Given that an increasing number of studies report associations between excessive social media use with elevated levels of depression, impulsivity, autism and alexithymia (Demirci, Akgonul, & Akpinar, 2015;Wasil, Venturo-Conerly, Shingleton, & Weisz, 2019;Elhai, Gallinari, Rozgonjuk, & Yang, 2020;Elhai, Yang, Fang, Bai, & Hall, 2020), and that sub-clinical variations in these domains have been associated with altered neural activation and cognitive processing (Ruf, Bessette, Pearlson, & Stevens, 2017;Luo et al., 2018;Li et al., 2019;Fan et al., 2023) corresponding indices were assessed as potential confounders. To this end all subjects underwent Chinese versions of previously validated questionnaires assessing these domains, including the Positive and Negative Affect Scale (PANAS) (Wang, 2008;Qiu, Zheng, & Wang, 2008), Beck Depression Index-II (BDI-II) (Beck et al., 1996;Sun, Li, Yu, & Li, 2017), Barratt Impulsiveness Scale (BIS-11) (Patton, Stanford, & Barratt, 1995;Di, Gong, Shi, Ahmed, & Nandi, 2019), Autism Spectrum Quotient-50 (ASQ-50) ( Baron-Cohen et al., 2006;Zhang et al., 2016), and Toronto Alexithymia Scale (TAS) (Bagby et al., 1994;Ling, Zeng, Yuan, & Zhong, 2016). ...