Advances in the treatment of pediatric cancer have made it possible to expand initiatives beyond cure and cover aspects such as early detection, continuity of treatment and reduction in toxicity. All this has paved the way for a more comprehensive vision of patient care, which means better chances of healing and a fuller life - objectives of the World Initiative against Childhood Cancer. Within this comprehensive care, psychosocial care includes the social, psychological, spiritual and functional dimensions of the disease process of patients. This series includes guidelines and standards based on evidence that guarantee the quality of said care. The standards are the result of discussion and review by different professionals from Latin America and the Caribbean. Module 1 focuses on psychosocial evaluation as a strategy to support the objectives of the World Initiative against Childhood Cancer, and as a tool for health professionals to gather the necessary information to offer these patients a comprehensive approach focused on well-being, adaptation to the disease process, and adherence to treatment.