Aim The study aims to examine the psychometric properties of the Pittsburgh Sleep Quality Index‐Indonesian version. Background The Pittsburgh Sleep Quality Index has never been translated into Bahasa. Design This study employs a cross‐sectional and correlational study. Methods Data were collected from 528 adolescents of junior high school age (13–16 years) during August to September 2014. All participants agreed on the Indonesian version of Pittsburgh Sleep Quality Index and Beck Depression Inventory‐II. Psychometric properties were examined including internal consistency, construct validity and known group validity, and the receiver operating characteristic curve was used to measure the cut‐off point. Results The Cronbach's alpha for the Pittsburgh Sleep Quality Index‐Indonesian version was adequate. There were positive correlations between the total score and seven component scores. Construct validity revealed that the total score of the Pittsburgh Sleep Quality Index‐Indonesian version was correlated with the total score of the Indonesian version of the Beck Depression Inventory‐II. Known group validity indicated that adolescents without depression risk had better sleep quality. According to receiver operating characteristic curve analysis, the cut‐off point at a score of 6.5 indicated the best possible relationship of sensitivity and specificity. Conclusion The Pittsburgh Sleep Quality Index‐Indonesian version has high reliability and validity for screening sleep quality among adolescents.

Anxiety is common among adolescents. Self-report anxiety scales are needed to screen and prevent adolescents sinking into worse mental health. The purpose of this study was to assess the psychometric properties of Indonesia Zung Self-rating Anxiety Scale (SAS), including translation, validity, reliability and receiver operating characteristics (ROC). We used cross-sectional study and correlational design in this study. Total sample was 1,000 adolescents in junior and senior high school. The SAS was translated into Bahasa Indonesia based on World Health Organization guidelines. SAS and the Indonesia version of Beck Depression Inventori-(BDI) II questionnaires were used to develop construct validity. Correlation between item score and total score was used to establish convergent validity. Cronbach’s alpha was used to calculate reliability and ROC curves were used to examine cut-off point of SAS. Construct validity showed positive correlation between the SAS and Indonesia version of BDI II scores. Convergent validity showed positive correlation between each item and total score. Cronbach’s alpha 0.691 and the ROC 36.5. Thus, the Indonesia version of SAS provides a reliable and valid tool to screen anxiety among adolescents.

Background: Curiosity is a personality characteristic, which fits with wellbeing and positive functioning. The objective of this study was to assess the construct validity of the Curiosity and Exploration Inventory II (CEI-II) in Indonesia.Design and Methods: The study included 256 undergraduate students who lived in Indonesia, mean age 19.8 years old. The CEI-II measures stretching and embracing using 11 items. The English version of CEI-II was translated into Bahasa. The Cronbach’s alpha coefficient and intraclass correlation coefficient (ICC) were addressed to examine internal consistency reliability and the test-retest reliability. To evaluate construct validity, exploratory factor analysis (EFA) was used to assess factor structure and confirmatory factor analysis (CFA) was used to evaluate the structural model fit of the CEI-II Indonesia version.Results: The study showed Cronbach’s alpha for the internal consistency of the overall CEI-II Indonesia version was 0.77. The ICC for the test-retest reliability ranged between 0.753-0.829. EFA showed adequate with the Kaiser-Meyer-Olkin value of 0.86 and the Bartlett’s test of sphericity was statistically significant. CFA tested the second-order model with two-order factors and showed a model fit.Conclusions: The CEI-II Indonesia version indicated acceptable construct validity to evaluate curiosity in Indonesia.