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Overall, participants thus showed rather stable attitudes towards nuclear power across the three measurement waves.
This indicates that student development differed significantly across the three measurement waves; however, the most substantial contribution is attributable to the class level.
Third, although we showed that our linearity assumption holds, four measurement waves would be preferable in order to test for non-linearity in growth.
Further, on a methodological level, the assessment of stability needs to be based on longitudinal designs that include multiple measurement waves.
We collected data on NSSI and identity from 380 high school students (Mean age = 14.3 years; SD = 1.68; range 12 to 19 years; 52.4% females) using self-report questionnaires at two measurement waves separated by a one-year period.
Finally, the fixed effect estimate gives the grand mean across all measurement waves, students and classes, and shows that the average competence equals 0, which is in line with the IRT-based WBB scale.
Similar(18)
Data from a repeated measures logistic regression, predicting change in participation/response (vs non-participation) from time (measurement wave), sex, age, country of birth, civil status and self-rated health.
For each measurement wave, the Grade Point Average (GPA) was calculated by averaging the (weighted) grades across subjects.
The principle of common-path interferometry is realized by devising a single-mode fiber waveguide that generates the reference wave directly from the measurement wave, enabling removal of the temporal wavefront fluctuation caused by vibration.
Car seats were not used by 161 (11.8%) Pacific children at the 6 weeks measurement wave, 715.8.8%) at 1-year, and 44 (3.8%) at 2 years, while car/booster seats were not used by 139 (13.3%) at the 4 years wave.
Table 1 shows the number of parents that participated at each measurement wave.
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