/ Child & developmental psychology / Child, developmental and lifespan psychology / Developmental Psychology / Drug consumption / Ego Identity Status / Emerging Adulthood / emotional autonomy / emotional development in adolescence / Emotional Separation / European adolescent research / HBSC / Major Depression / parent adolescent conflict / Parent Adolescent Relationship / peer relationship dynamics / PSYCHOLOGY / Developmental / Child / psychosocial risk factors / Pubertal Maturation / pubertal timing / School Maladjustment / UCLA Loneliness Scale / Vice Versa / youth risk behaviours