Evaluation on Scales Based on Unidimensional Item Response Models
- VernacularTitle:基于单维项目反应模型的量表评价研究
- Author:
Wenjing BAI
1
;
Liyun HE
;
Yanhong ZHANG
;
Weimin LIU
;
Baoyan LIU
Author Information
- Keywords: Item response theory; sub-health; preventive treatment; discrimination; information quantity
- From: World Science and Technology-Modernization of Traditional Chinese Medicine 2017;19(9):1473-1480
- CountryChina
- Language:Chinese
- Abstract: This study was aimed to assess scales with the unidimensional item response models (UIRM) and classical test theory.The reliability and validity of 841 sub-health status samples were analyzed by CTT.Surveying evaluation from the project perspective was also conducted.The results showed that Cronbach'so coefficients in five areas were all larger than 0.6 with relatively high consistency.The scale structures of five areas were relatively good and the CFI was 0.96.When discriminations of all items were larger than 0.3,the sensitivity of item for its area was high.When the scale test information was 33.8,the accuracy of sub-health status was relatively high.However,there were still some items should be further revised.It was concluded that UIRM can be used to evaluate the psychological measurement performance in the project.It is a supplement to the evaluation result of classical test theory.The reliability and validity of sub-health status scale are relatively high.After IRT correction,it can be used for human-computer interaction techniques “preventive treatment” dynamic monitoring.
