Split-half reliability is a method of estimating the internal consistency reliability of a psychological test. It examines whether different parts of the same test produce similar results, indicating that all items measure the same underlying construct. This method is commonly used in psychological research, educational testing, personality assessment, intelligence testing, and attitude measurement to determine the dependability of a test. In the split-half method, a test is divided into two equivalent halves. The most common ways of splitting the test are odd-even items, first half versus second half, or random assignment of items into two groups. Each participant receives scores for both halves, and the correlation between these two sets of scores is calculated. A high positive correlation indicates that both halves measure the same characteristic consistently, suggesting good internal consistency. A low correlation indicates inconsistency among test items and raises concerns about the reliability of the instrument. Since each half contains only half of the original test items, the correlation obtained tends to underestimate the reliability of the complete test. To correct this problem, the Spearman-Brown prophecy formula is applied. This formula estimates the reliability of the full-length test based on the correlation between the two halves. The corrected coefficient provides a more accurate estimate of the test's overall reliability. Split-half reliability is particularly suitable for tests in which all