基于扩展平行过程模型的医科大学生废物分类信念和行为量表的编制及心理测量学评价。
Development and psychometric evaluation of waste separation beliefs and behaviors scale among female students of medical sciences university based on the extended parallel process model.
机构信息
Student Research Committee, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran.
Department of Health Education and Promotion, Public Health School, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
出版信息
Environ Health Prev Med. 2020 Apr 16;25(1):12. doi: 10.1186/s12199-020-00849-6.
BACKGROUND
The increasing production of un-recycled waste is a great threat to public health. Therefore, assessment and measurement of people's beliefs and perceptions with regard to these threats can contribute to the development of suitable educational messages promoting waste separation behaviors. This study aimed to carry out the scale development and psychometric evaluation of behaviors and beliefs associated with waste separation among female students.
METHOD
This methodological research was performed in 2019. The primary questionnaire was developed based on the assessment of waste separation beliefs and behaviors based on the extended parallel process model. Afterwards, to confirm the content and face validity of the research tool, the opinions of 14 faculty members and certain students were asked for, respectively. In order to assess the construct validity of the questionnaire, exploratory factor analysis was performed based on the data collected from 386 female students in Isfahan University of Medical Sciences, Iran. The internal and external reliability of the tool was determined through estimating Cronbach's alpha and test-retest based on intraclass correlation (ICC) index, respectively.
RESULTS
The mean age and academic semester of the students were 22 ± 1.9 years and 5.58 ± 2.6, respectively. The primary version of the questionnaire was designed with 65 items; one item was omitted during the content validity process. Construct validity with factor analysis technique yielded nine dimensions including 64 items with a factor loading above 0.3. The overall reliability of the research tool was confirmed at Cronbach's alpha of 0.87. Furthermore, the ICC of the entire questionnaire was 0.89.
CONCLUSION
According to the results of the study, the final 64-item questionnaire could be used by various researchers to assess waste separation beliefs and behaviors considering suitable psychometric features.
背景
未回收废物的大量产生对公众健康构成了巨大威胁。因此，评估和测量人们对这些威胁的信念和看法，可以为制定促进废物分类行为的合适教育信息做出贡献。本研究旨在开发和心理测量女学生与废物分类相关的行为和信念量表。
方法
这是 2019 年进行的一项方法学研究。主要问卷是根据扩展平行过程模型评估废物分类信念和行为而制定的。之后，为了确认研究工具的内容和表面效度，分别征求了 14 名教师和部分学生的意见。为了评估问卷的结构效度，根据伊朗伊斯法罕医科大学 386 名女学生的数据进行了探索性因子分析。通过估计 Cronbach's alpha 和基于组内相关（ICC）指数的测试-重测信度，分别确定了工具的内部和外部信度。
结果
学生的平均年龄和学术学期分别为 22 ± 1.9 岁和 5.58 ± 2.6。初步问卷设计有 65 个项目；在内容效度过程中删除了 1 个项目。使用因子分析技术的结构效度得出了包括 64 个因子负荷大于 0.3 的 9 个维度。研究工具的整体可靠性通过 Cronbach's alpha 为 0.87 得到确认。此外，整个问卷的 ICC 为 0.89。
结论
根据研究结果，最终的 64 项问卷可由不同的研究人员使用，以评估废物分类信念和行为，并考虑到适当的心理计量学特征。
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