This study aims to systematically review the application of Single Subject Design (SSD) in counseling interventions for children and adolescents with special needs. The novelty of this article lies in synthesizing recent empirical findings (2015–2025) from three major databases: ScienceDirect, Springer, and ProQuest, focusing on the effectiveness and methodological diversity of SSD within the context of inclusive education. Using a comprehensive literature search and strict inclusion criteria, 19 relevant studies were analyzed regarding types of interventions, participant characteristics, and outcome measures. The results indicate that SSD provides rigorous and individualized evaluation of counseling interventions, demonstrating significant improvements in social interaction, adaptive behavior, and emotional regulation. This review highlights the flexibility and relevance of SSD in personalized counseling, with important contributions from family involvement and culturally adapted approaches. The article offers a valuable evidence-based foundation for practitioners and policymakers to enhance intervention strategies for children with special needs.
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