RUWE as a function of variability amplitude (A_Gproxy) in Gaia DR3. A sample of YSOs (without known binaries and restricted to RUWE < 2.5) is divided into four magnitude bins, with different rolling quartiles shown in the left (first quartile), middle (median), and right (third quartile) panels. In all panels, the yellow dashed region and black-dashed line show the threshold for selection of unresolved pairs with RUWE adopted in this study.