Childhood adversities appear to be a major risk factor in the development of psychotic-like symptomatology (Egerton et al., 2016; Husted et al., 2012; Velthorst et al., 2013). However, most studies in this field have focused on child maltreatment. Although this is a very important domain, there are other adversities that need further investigation, such as bullying (Sætren et al., 2024). To date, several reviews have examined the relationship between bullying and psychosis (Cunningham et al., 2016; Moore et al., 2017; van Dam et al., 2012). Overall, these reviews support the relationship between bullying and the subsequent development of psychotic symptoms. However, studies on the role of bullying in high-risk states of psychosis are fewer (e.g., Bearden et al., 2022; Vargas et al. 2019). The main objective of this study is to empirically test the relationship between bullying/cyberbullying and psychometric high-risk of psychosis. A clinical sample of adolescents and young adults who attend a day hospital will complete the Spanish version of the Prodromal Questionnaire - Brief version (PQ-B, Fonseca-Pedrero et al., 2021) as a measure of psychometric high-risk of psychosis. Bullying related variables (i.e., occurrence, type, frequency, distress and existence of cyberbullying) will be tested comparing the differences between those with psychometric at-risk of psychosis and those without it according to the PQ-B. The control of the contexts where children develop their childhood, the early detection of bullying and the work with victims and aggressors should be fundamental objectives in the prevention of psychotic disorders.