“…For example, children exhibit enhanced sympathetic responses in situations in which a puppet “friend” is in need relative to an “acquaintance” puppet (Costin & Jones, 1992). Toddlers and even chimpanzees help familiar others more than unfamiliar ones in prosocial helping tasks (Allen, Perry, & Kaufman, 2018; Barragan & Dweck, 2014; Engelmann, Haux, & Hermann, 2019; see Wynn, Bloom, Jordan, Marshall, & Sheskin, 2018 for discussion). Three‐ to 5‐year‐olds share more with known others (i.e., friends) than less known others (i.e., acquaintances; Birch & Billman, 1986) and children as young as 3 also direct more resources toward friends and siblings than toward strangers in a giving task (Furman & Bierman, 1984; Lu & Chang, 2016; Moore, 2009; Olson & Spelke, 2008; Paulus, 2016).…”