“…Although there is no field‐wide consensus as to what defines an unusual altruist (but see Lawn et al, 2022), a number of studies have begun to examine the motivations and defining characteristics of such altruists across an array of real‐life groups. These include those who risked their lives to rescue Jews in Nazi Germany (Oliner & Oliner, 1988); altruistic kidney donors (Amormino et al, 2022; Brethel‐Haurwitz et al, 2018; Marsh et al, 2014; Vekaria et al, 2017); other organ donors (Rhoads et al, 2022); SARS‐CoV‐2 challenge trial participants (Rose et al, 2021); humanitarian aid workers (Rhoads et al, 2022); people who have received awards for bravery or care (Rand & Epstein, 2014; Walker & Frimer, 2007); those who make an extraordinary commitment to a social organization or charity (Matsuba & Walker, 2004); and those who have engaged in heroic acts of rescue (Rhoads et al, 2022). Holistically the field has proposed that members of these groups vary in their moral values (Amormino et al, 2022; Walker & Frimer, 2007), moral motivation (Rand & Epstein, 2014), beliefs about humanity (Amormino et al, 2022), social discounting for others (Vekaria et al, 2017), certain personality traits (Matsuba & Walker, 2004), attachment style (Walker & Frimer, 2007), and their neural functioning (Brethel‐Haurwitz et al, 2018; Marsh et al, 2014).…”