<![CDATA[Social development has become an important aspect of university students' adjustment during emerging adulthood. However, measuring this construct requires a psychometrically sound instrument capable of accurately representing its multidimensional nature. This study aimed to examine the construct validity of the Social Development Scale by evaluating whether its theoretical structure was supported by empirical data. A quantitative instrument validation design was employed involving 169 university students selected through purposive sampling. Data were analyzed using Confirmatory Factor Analysis (CFA) with Jamovi version 2.3 and the lavaan package. The instrument was developed based on four theoretical dimensions: Subjective Well-Being, Social Relationship, Social Participation, and Social Value & Fairness. The findings demonstrated that the measurement model generally supported the proposed factorial structure. Three dimensions Subjective Well-Being, Social Relationship, and Social Value & Fairness showed satisfactory model fit, whereas the Social Participation dimension indicated acceptable but less optimal fit, suggesting the need for further refinement. Overall, the results provide empirical evidence that the Social Development Scale possesses adequate construct validity and can be used to assess social development among university students. These findings contribute additional psychometric evidence supporting the use and further development of the instrument in higher education research.]]>
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