Wise Intervention for Reducing Aggressive Behaviors and Promoting Prosocial Behaviors Toward LGB-TNB Individuals

NCT ID: NCT07212283

Last Updated: 2025-10-08

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: NA
• Total Enrollment: 1000 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-09-18
• Study Completion Date: 2026-06-30

Brief Summary

This study evaluates the effectiveness of a wise Intervention to reduce aggressive behaviors and promote prosocial behaviors toward LGB-TNB individuals among Spanish adolescents. Half of the participants will receive the experimental intervention, while the other half will receive a control intervention.

Detailed Description

Discrimination based on sexual orientation and gender identity is a social problem of great relevance. Sexual orientation is understood as the mechanism that directs affective-sexual attraction and interest, manifesting with varying intensity. Regarding gender identity, it has historically been interpreted under a binary paradigm based on external sexual organs, rendering trans and non-binary identities invisible. However, it is currently understood as the internal feeling about one's own gender, so that trans and/or non-binary people represent those whose gender identity differs from the one assigned at birth.

Despite the growing visibility, public awareness, and recognition of the rights of lesbian, gay, bisexual, trans, and non-binary people (LGB-TNB), discrimination based on sexual orientation and gender identity continues to be a social problem of great relevance with serious consequences for those who suffer it. This reality underlines the need to implement effective interventions aimed at addressing these aggressive behaviors and the mechanisms that sustain them, not only among those who perpetrate acts of violence, but also among people who witness these aggressive behaviors.

In addition, intervening during adolescence is especially relevant, as this stage represents a critical moment in the moral, social, and emotional development of individuals. Moreover, during adolescence, discriminatory behaviors and peer aggression increase, and previous studies show that LGB-TNB people face a higher risk of violence in educational settings. Nevertheless, although adolescence becomes a critical period for the development of risk behaviors, it also involves important transitions and learning opportunities. Furthermore, adolescence is a turning point during which well-designed interventions have a high potential to redirect a person's developmental trajectory in a lasting way. Therefore, it can be an especially favorable moment for implementing interventions.

In this way, numerous interventions have been carried out in educational settings to prevent aggressive behaviors among peers. Although most of these initiatives have mainly focused on more general problems, such as bullying and cyberbullying, in recent years preventive interventions specifically aimed at reducing aggressive behaviors based on sexual orientation and gender identity in both face-to-face and digital contexts have increased. However, most current interventions focus on educating people about issues related to LGB-TNB topics, reaching mixed and contradictory results regarding their effectiveness, and also highlighting that there is little empirical evidence about the robustness of the effects of LGB-TNB interventions and their underlying mechanisms. Therefore, these interventions present areas for improvement that constitute important challenges for scientific psychology.

Recently, interest has grown in social psychology regarding a new approach to interventions, which have been called wise interventions. Many of these interventions have impactful results because they are usually very brief in time and produce lasting changes in people's behavior. Moreover, this type of intervention is of great interest in adolescence, as they allow themselves to be designed in such a way that they are perceived as respectful of students' autonomy and status, so that they feel they are making their own decisions.

Therefore, the aim of this project is to adapt to the LGB-TNB context a wise intervention to reduce online and offline aggression among adolescents, especially based on sexual orientation and gender identity, and to increase the intention to support and prosocial behaviors when participants witness these aggressions, especially those directed at LGB-TNB people.

Conditions

Aggression; Adolescence

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: DOUBLE

Study Groups

Values alignment wise intervention

Group Type: ACTIVE_COMPARATOR

Values alignment wise intervention

Intervention Type: BEHAVIORAL

This intervention will be based on the same strategies as the experimental intervention, but it will not address aspects related to prosocial behaviors or aggression toward LGB-TNB individuals; instead, it will be applied to improve adolescents' eating habits.

Wise Intervention LGB-TNB

Group Type: EXPERIMENTAL

Wise Intervention LGB-TNB

Intervention Type: BEHAVIORAL

The intervention will be designed to reduce aggressive behaviors based on sexual orientation and gender identity and to promote prosocial behaviors toward these individuals. This intervention will include three components: (1) reading scientific studies about people's ability to change. In addition, they will read other studies about how thoughts and emotions influence behavior through brain pathways, and that these pathways can be modified under certain circumstances; (2) reading testimonials that support the idea that people can change. These testimonials include accounts of people who were victims or perpetrators based on sexual orientation and gender identity, including important components of empathy and prosocial behaviors toward the victims. To give credibility to the intervention, they will be informed that these stories were written by other young people who previously participated; and (3) self-persuasion exercises that involve an active commitment to change.

Interventions

Wise Intervention LGB-TNB

The intervention will be designed to reduce aggressive behaviors based on sexual orientation and gender identity and to promote prosocial behaviors toward these individuals. This intervention will include three components: (1) reading scientific studies about people's ability to change. In addition, they will read other studies about how thoughts and emotions influence behavior through brain pathways, and that these pathways can be modified under certain circumstances; (2) reading testimonials that support the idea that people can change. These testimonials include accounts of people who were victims or perpetrators based on sexual orientation and gender identity, including important components of empathy and prosocial behaviors toward the victims. To give credibility to the intervention, they will be informed that these stories were written by other young people who previously participated; and (3) self-persuasion exercises that involve an active commitment to change.

Intervention Type: BEHAVIORAL

Values alignment wise intervention

This intervention will be based on the same strategies as the experimental intervention, but it will not address aspects related to prosocial behaviors or aggression toward LGB-TNB individuals; instead, it will be applied to improve adolescents' eating habits.

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• Informed consent by the adolescents and their families.
• To be fluent in Spanish and/or Euskera.

Exclusion Criteria

• Lack of permission by families and the adolescent.
• Lack of understanding of the instructions.

• Minimum Eligible Age: 14 Years
• Maximum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

University of Deusto

OTHER

Sponsor Role: lead

Responsible Party

Nerea Cortazar Enciondo

PhD

Responsibility Role: PRINCIPAL_INVESTIGATOR

Locations

Nerea

Bilbao, BIZKAIA, Spain

Site Status: RECRUITING

Countries

Spain

Central Contacts

Nerea Cortazar Enciondo, PhD

Role: CONTACT

nerea.cortazar@deusto.es

944139003 ext. 2668

Facility Contacts

Nerea Cortazar Enciondo

Role: primary

nerea.cortazar@deusto.es

944139003 ext. 2668

Provided Documents

Document Type: Study Protocol and Statistical Analysis Plan

View Document

Document Type: Informed Consent Form

View Document

Other Identifiers

ETK-90/24-25

Identifier Type: -

Identifier Source: org_study_id