The researcher Victoria Soto, from the AITANA group, has recently defended her doctoral thesis entitled “Interiorized and Exteriorized Symptomatology and its relationship with suicidal behaviour in adolescents” under the supervision of Dr José Antonio Piqueras. The Doctoral Thesis has been comprised of four studies aimed at evaluating internalised and externalised symptoms as risk factors for suicidal behaviour in adolescents and young people and reviewing the effectiveness of suicide prevention programmes at an international level in this population. From this research, it is concluded that internalized (especially depressive) and externalized symptoms are predictors of suicidal behaviour in adolescents and young people. Therefore, it highlights the need for detection and treatment of these symptoms as a crucial strategy to prevent suicide in this risk group and for further research on effective interventions.