“…Some previous studies showed that SMU is a positive predictor of loneliness [ 15 , 16 , 31 , 36 , 42 , 43 , 44 ], while other research indicated a negative relationship [ 24 , 45 , 46 , 47 ] or no significant association [ 48 ]. In addition, active and not intensive SMU was a positive predictor of life satisfaction [ 17 , 46 ], while excessive and passive SMU was negatively related to well-being [ 11 , 12 , 13 , 14 , 15 , 16 , 17 ].…”