“…As well as being an institution which promotes academic learning, alongside home, school is one of the most important contexts in which children socialize and in which peer relations play an important role in their affective, social and moral development (Gifford-Smith & Brownell, 2003; Palacios & Hidalgo, 1999; Shaffer, 2002; Trianes, Muñoz, & Jiménez, 2007). It is because of this that, for decades, psychoeducational research has been paying particular attention to the horizontal relations established in the school context.…”