Objective:

To evaluate the effectiveness of a transdiagnostic online intervention based on Rational Emotive Behavioral Therapy (REBT) for reducing anxiety and depression symptoms in children and adolescents aged 6-18.

Key Findings:

• Internalizing problems are prevalent in youth, with significant rates of untreated anxiety and depression.
• Internet-delivered interventions can effectively reduce anxiety symptoms in youth, though results for depression are mixed.
• REBT is effective for both adults and youth, targeting irrational beliefs that contribute to emotional distress, particularly in an online format.

Interpretation:

The findings suggest that a transdiagnostic approach using REBT can be a scalable and effective method for addressing anxiety and depression in youth, particularly in low-resource settings where access to mental health services is limited, highlighting the need for innovative solutions.

Limitations:

• The study may have limited generalizability due to its specific population and setting.
• Potential biases in self-reported measures of anxiety and depression.
• The impact of the COVID-19 pandemic on mental health and treatment access may also limit the findings.

Conclusion:

The REBTonAd intervention shows promise as an effective online treatment for youth with anxiety and depression, addressing the critical need for accessible mental health care and emphasizing the importance of scalable interventions.