ABSTRACT
Rationale, the transparent sharing of a counselor’s therapeutic intentions, offers a powerful yet underutilized tool for strengthening client engagement, trust, and autonomy in counseling. In alignment with humanistic counseling, the use of rationale supports the ethical commitment to informed consent and collaborative practice. This paper explores the definition, theoretical foundation, and clinical relevance of rationale as a technique within counseling. Drawing from diverse professional contexts, the author illustrates how rationale has long been used to promote clarity and cooperation, yet remains insufficiently defined in mental health literature. Practical examples are provided across populations, including parents, children, and adolescents, highlighting how rationale can help reduce resistance, foster internal motivation, and strengthen the therapeutic alliance. Implications for counselor training are discussed, emphasizing how rationale can support the development of intentionality and conceptualization skills among counselors-in-training. By integrating rationale, counselors can model transparency, empower clients, and facilitate deeper therapeutic engagement.