“…Other studies have looked at learning from the perspective of groups, for example, with a focus on how recruits or converts acquire new knowledge and skills (Galonnier & de los Rios, 2016;Inge, 2016;Wiktorowicz, 2005), how charismatic leaders transmit their teachings to followers (Beekers, 2015;Gendron, 2017;Wali, 2017), or how groups learn from one another (Morrison, 2017;Ranstorp & Normark, 2015). One study suggests that terrorist learning occurs across diverse interdependent agents, including individuals, groups, and entire generations (Kettle & Mumford, 2017). Others focus more explicitly on intergenerational learning, for example, how children acquire religious or political beliefs and practices from older family members (Copeland, 2019;Horgan et al, 2017;Lee & Knott, 2016;Scourfield et al, 2013), or on intragenerational peer transmission and skill development (Everton, 2016;Lee & Knott, 2017;Maher, 2014).…”