摘要:The development of brief and inexpensive interventions that reduce risky behaviors in adolescence constitute a challenge for current research. This study addresses the prevention of two online behavior problems in adolescents (cyberbullying and online grooming). Two pilot studies evaluated the effects of a 1-hour intervention, which combined self-affirmation (SA) with the incremental theory of personality (ITP), for cyberbullying and online grooming. Study 1 involved 339 adolescents (51% male, mean age = 14.12 years, SD = 0.70), who were randomly assigned to the SA + ITP intervention or one of two control conditions. Hierarchical regression analyses indicated that the SA + ITP intervention reduced the reciprocity between sexual solicitation and sexualized interaction with adults, as well as between cyberbullying victimization and perpetration. Study 2 included 214 adolescents (50.3% male, mean age = 14.06 years, SD = 0.96), who were randomly assigned to the SA + ITP or a control condition. Hierarchical linear modeling analyses indicated that the SA + ITP reduced the reciprocity between sexual solicitation and sexualized interaction with adults, and reduced cyberbullying perpetration. The studies provided preliminary evidence of the benefits of the SA + ITP intervention.