Human capital has been shown as an important determinant of environmental performance at the firm and province levels. We try to identify the impact of human capital on environmental performance at the country level. To address potential endogeneity and measurement errors regarding human capital, we use the primary school enrollment rate a century ago as an instrument for today’s human capital stock. The instrumental variable estimation, based on a sample of 72 countries, shows that human capital has a statistically significant effect on the Environmental Performance Index, a composite measure of national environmental performance, primarily through improving biodiversity, habitat, and sustainable agriculture, all of which are the indicators related to environmental sustainability. These findings from cross-country analysis are broadly consistent with those of firm-level or province-level studies, emphasizing the role of human capital in enhancing the awareness of and compliance with environmental regulations, thus leading to an improvement in environmental performance.

Objective The purpose of the present study was to develop and validate the Korean version of the clinician-administered KSADSCOMP, which is the recently updated, web-based computerized version of the Kiddie Schedule for Affective Disorders and Schizophrenia for school-age children (KSADS).Methods A total of 71 participants (mean age=12.04±3.86 years, female=29.57%) participated in the study. A child-adolescent psychiatrist established a diagnosis for the participant after a thorough psychiatric interview with the participant and the parent. Researchers who were blind to the diagnoses administered the clinician-administered KSADS-COMP to the parents and participants. The gold-standard diagnoses made by child-adolescent psychiatrists were compared to the current diagnoses generated by the clinician-administered KSADS-COMP. Percent agreement, Cohen’s Kappa, Gwet’s first-order agreement coefficient (AC1), sensitivity, specificity, positive predictive value, and negative predictive value were calculated.Results Gwet’s AC1, our preferred measure of agreement, showed excellent range between 0.78 and 1. Sensitivity, specificity, positive predicted value and negative predictive value also showed high scores.Conclusion The current study demonstrated excellent criterion validity of the Korean version of the clinician-administered KSADSCOMP, though the small sample size could be a limitation. The current study was the first study to examine the criterion validity of the KSADS-COMP. Due to its readily usable format and efficient and accurate diagnostic process, widely-use of KSADS-COMP is expected.