Supplementary materials EJPA: Validation of the Parent-Report and Self-Report Versions of Highly Sensitive Child Scale in Serbian Samples

The parent-report and self-report forms of the Highly Sensitive Child scale are significant tools for examining environmental sensitivity in children and adolescents. Nevertheless, due to their relatively recent development, these scales have not undergone validation in numerous cultural contexts, and there remains a paucity of studies concerning their psychometric characteristics. A total of 793 parents and their children from Serbia participated in this study. First, we assessed the structural validity and reliability of the Highly Sensitive Child scale parent-report (HSC-PR). Second, we investigated the factor structure, measurement invariance, and convergent validity of the Highly Sensitive Child scale self-report (HSC-SR). The results supported the HSC-PR and HSC-SR three-factor structure as well as scalar measurement invariance across gender. The correlations with convergent measures (positive affect, negative affect, and physiological hyperarousal) indicated that there are three distinct dimensions contributing to children’s well-being in different ways. Additionally, the subscale of high sensitivity that appeared to have a negative impact on children’s well-being was Ease of Excitation. The reliability of responses obtained from two different assessment agents will also be discussed. Supplementary materials for: Rajić, I., Lazić, M., & Pluess, M. (2025). Validation of the Parent-Report and Self-Report Versions of Highly Sensitive Child Scale in Serbian Samples. European Journal of Psychological Assessment. Hogrefe Publishing Group. https://doi.org/10.1027/1015-5759/a000903 unknown unknown