“…Intervention is critical for these children as their social setbacks tend to be "durable, recurrent, and often escalating" (Whalen & Henker, 1985, p. 448), and unfortunately often increase as opposed to improve over time. Furthermore, negative peer relationships have been found to be predictive of problems in other domains of life, including academic and occupational achievement (Campbell & Paulauskas, 1979;Løkke, 2011;Whalen & Henker, 1985).…”