Associated social symbolism (ASS) and the manipulative attitude (MA) are present in most nine-yearold children from the Peruvian Amazon with adequate intellectual development (71.2%). The study was conducted in 52 children and their parents through interviews in small groups, applying the TMP test and two interview guides (child-parents). The results indicated significant correspondence between the preference (children) and the decision to purchase the product symbolized (parents), and 78.5% chose the same brand as their peers. Difficulties in understanding the content of advertising material (CAM) involve 78.9% (higher in urban area). There is significant interdependence between MA (children) and buying reactions (parents) and high discordance between responses (children-parents). Educate in the understanding of the CAM from nine years, could reduce the consequences of ASS through psychosocial programs for school mental health.