Exploring the Acceptability, Appropriateness, and Utility of a Digital Single-Session Intervention (Project SOLVE-NZ) for Adolescent Mental Health in New Zealand: Interview Study Among Students and Teachers.
Blind M, Starkey N, Bird A, McMillan H • JMIR formative research • 2026
Both Project SOLVE-NZ and Project Success-NZ were perceived as acceptable, appropriate, and useful for rangatahi in Aotearoa New Zealand, with participants endorsing their sociocultural relevance and potential to fill gaps in students' learning and mental health support.
Key Findings
Results
Participants endorsed the sociocultural relevance of both Project SOLVE-NZ and Project Success-NZ to rangatahi in Aotearoa New Zealand and viewed all existing adaptations favorably.
12 students aged 13-14 years (50% female) participated in a focus group
8 teachers with a mean of 8.75 years (SD 7.96) teaching experience (62.5% female) participated in individual semistructured interviews
Data were analyzed using reflexive thematic analysis
Participants viewed all existing cultural and contextual adaptations favorably
Results
Most participants had no preference between Project SOLVE-NZ and Project Success-NZ, viewing both as capable of providing ongoing support throughout the school year.
Both interventions were perceived as acceptable, appropriate, and useful
Participants believed both interventions could provide ongoing support to rangatahi throughout the school year
This finding has implications for the design of a future randomized controlled trial in which Project Success-NZ would serve as an active control condition
Results
Participants believed the interventions would be valuable to a wide range of rangatahi and may be particularly relevant for youths experiencing economic hardship.
Participants felt the interventions would help fill gaps in students' learning
Participants perceived benefits to mental health from both interventions
Economic hardship was specifically identified as a context in which the interventions may be especially relevant
Results
Teachers identified several strategies for increasing student engagement with the digital single-session interventions.
Suggestions included increased cultural and gender representation
Visual and literacy aids were recommended to accommodate a range of cognitive abilities
Whakawhanaungatanga (relationship building) was identified as an important element
Teacher guidance was suggested as a means of improving engagement
Background
The study identified a significant treatment gap in adolescent mental health care in New Zealand that digital single-session interventions may help address.
Barriers to care identified globally include extensive wait times, high costs, and concerns about appropriateness for non-Western clients
Project SOLVE was originally developed in the United States and targets problem-solving skill deficits underlying broad-ranging psychopathology
The adapted version, Project SOLVE-NZ, was developed specifically for rangatahi in Aotearoa New Zealand
Digital SSIs were framed as a promising alternative to address the mental health treatment gap
Conclusions
The authors generated four recommendations for designing digital single-session interventions for young people based on interview findings.
Recommendation 1: involve rangatahi and relevant stakeholders in the design process
Recommendation 2: consider how the intervention will be implemented
Recommendation 3: ensure that the intervention accommodates a range of cognitive abilities
Recommendation 4: ensure that the intervention reflects the diversity of rangatahi today
Blind M, Starkey N, Bird A, McMillan H. (2026). Exploring the Acceptability, Appropriateness, and Utility of a Digital Single-Session Intervention (Project SOLVE-NZ) for Adolescent Mental Health in New Zealand: Interview Study Among Students and Teachers.. JMIR formative research. https://doi.org/10.2196/81259