Mercedes Bermejo Boixareu is a health psychologist specializing in child and adolescent psychotherapy and systemic family therapy. She is the founder of Systemic Emotional Psychotherapy and the developer of the SER Model (Systemic-Emotional-Relational Model), which has been applied for more than fifteen years in clinical work with children, adolescents, and families.

She is the founder and director of Psicólogos Pozuelo, a multidisciplinary mental health center in Madrid, and of ESEUPE (European Higher School of Psychology and Education), where she leads advanced training programs in psychotherapy.

She is the author of Emociones familiares and Misión Océano, a book focused on the development of emotional competencies in children and adolescents. She is currently a doctoral candidate at UNED, where she conducts research on mechanisms of change in Systemic Emotional Psychotherapy in child and adolescent mental health.