“…By preschool, children exclude others (Crick et al, 1999), demonstrate a sensitivity to witnessed exclusion (Marinović & Träuble, 2018; Over & Carpenter, 2009; Song et al, 2015; Watson‐Jones et al, 2016), and recognise that excluded parties likely feel sad (Song et al, 2015). For children, witnessing exclusion results in mimicry (Watson‐Jones et al, 2014), prosocial behavior (Hwang et al, 2017), better memory for social information (Marinović & Träuble, 2018), and a desire for physical closeness (Marinović et al, 2017; Song et al, 2015; although see Stengelin et al, 2021). It appears that witnessed exclusion, too, produces similar behavioral responses in children and adults.…”