Our aim was to examine measurement invariance of the Flourishing Scale (FS)—a concise measure of psychological wellbeing—across two study samples and by population characteristics among Canadian adolescents. Data were retrieved from 74,501 Canadian secondary school students in Year 7 (2018–2019) of the COMPASS Study and from the original validation of the FS (n = 689). We assessed measurement invariance using a confirmatory factor analysis in which increasingly stringent equality constraints were specified for model parameters between the following groups: study sample (i.e., adolescents vs. adults), gender, grade, and ethno-racial identity. In all models, full measurement invariance of the FS across all sub-groups was demonstrated. Our findings support the validity of the FS for measuring psychological wellbeing among Canadian adolescents in secondary school. Observed differences in FS score among subgroups therefore represent true differences in wellbeing rather than artifacts of differential interpretation.

中文翻译：

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大量加拿大青少年样品中蓬勃发展规模的测量不变性

我们的目的是在两个研究样本中，并根据加拿大青少年的人口特征，检验蓬勃发展量表（FS）的量度不变性。数据是从COMPASS研究的第7年（2018-2019年）的74,501名加拿大中学学生和FS的原始验证中获得的（n= 689）。我们使用验证性因素分析评估了测量的不变性，其中在以下两组之间为模型参数指定了越来越严格的平等约束：研究样本（即青少年与成年人），性别，等级和民族种族身份。在所有模型中，都证明了所有子组之间FS的完全测量不变性。我们的研究结果支持了FS在衡量中学加拿大青少年心理健康方面的有效性。因此，在亚组之间观察到的FS评分差异代表了幸福感的真正差异，而不是差异解释的产物。