This study examined the psychometric properties of the Greek version of the Smoking Efficacy Scale (SES) for adolescents in a sample of 536 high school students. The factorial structure of the SES was examined by means of a series of exploratory factor analyses. The structural validity, the internal consistency, the temporal stability, and the concurrent validity of the SES were assessed. Exploratory and confirmatory factor analyses revealed a clear three-factor (emotion, opportunity, and friends) structure. Furthermore, SES predicted students' smoking behavior. Overall, the multidimensionality of the SES was supported by our findings, suggesting that the Greek version of the SES appears to be a psychometrically sound instrument that can be used for the evaluation of smoking prevention and smoking cessation programs for high school students.

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The aim of this study was to explore students’ calibration of sport performance in relation to better or worse than average effect in physical education settings. Participants were 147 fifth and sixth grade students (71 boys, 76 girls) who were tested in a soccer passing accuracy test after they had provided estimations for their own and their peers’ performance in this test. Based on students’ actual and estimated performance, calibration indexes of accuracy and bias were calculated. Moreover, students were classified in better, worse, or equal than average groups based on estimated scores of their own and their peers’ average performance. Results showed that students overestimated their own performance while most of them believed that their own performance was worse than their peers’ average performance. No significant differences in calibration accuracy of soccer passing were found between better, worse, or equal than average groups of students. These results were discussed with reference to previous calibration research evidence and theoretical and practical implications for self-regulated learning and performance calibration in physical education.