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Psychometric properties of TAS, TAI, FAT test anxiety scales 6 in Chinese university students: a Bifactor IRT study

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Abstract

In this study, the psychometric properties of three commonly used rating scales of test anxiety were examined, including the test anxiety inventory (TAI), the test anxiety scale (TAS) and the Friedman-Bendas Test Anxiety Scale (FAT). Under the framework of item response theory (IRT), the Bifactor multi-dimensional item response model was employed to compare the psychometric properties of the three scales. Results showed that the Bifactor structures were suitable for the three scales, which were then used in the subsequent Bifactor multidimensional item response theory analysis. Although the three commonly used TA scales were likely to measure the same underlying construct—test anxiety, they had very different psychometric properties. The findings of the Bifactor Multi-IRT provided suggestions for determining which scale to use in a given study design: the TAI and the FAT evaluated information at greatly overlapping ranges; however, the TAI, performing a litter better at the same levels of severity of TA, may be a good choice when we recruit those with various levels of TA severity to ensure a high precision. What’s more, FAT may be a good choice for measuring those with moderate TA severity. Meanwhile, the TAS provided more information at the lower level of TA symptomatology, which was to say, TAS was more suitable for epidemiological TA studies and for measuring those with lower TA severity.

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Funding

All of the authors agree with the submission to Current Psychology. This study was supported by the National Natural Science Foundation of China (31960186,31760288,31660278).

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Correspondence to Dongbo Tu.

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All authors declare that they have no conflict of interest.

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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Informed consent was obtained from all individual participants included in the study.

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Appendix 1

Appendix 1

The index of test quality criteria

Index

Criteria

Meaning or Function

Reliability

Test-retest reliability

Test-retest reliability is the degree to which test scores remain unchanged when measuring a stable individual characteristic on different occasions (Vilagut 2014).

Split-half coefficient

Refers to the correlation of the scores of all the subjects on the two halves after dividing one test into two equal parts.

Cronbach’s alpha

Alpha is an estimate of the correlation between two random samples of items from a universe of items like those in the test (Bland and Altman 1997).

Validity

Convergent validity

The degree to which the instrument correlates with other measures with which it should correlate (Ballatori et al. 2010).

Divergent validity

Divergent validity is a term to describe evidence that measures of constructs that theoretically should not be highly related to each other are, in fact, not found to be highly correlated to each other. (Hubley 2014).

Factorial validity

Factorial validity examines the extent to which the underlying putative structure of a scale is recoverable in a set of test scores. (Piedmont 2014).

Norm

Norm is more of a reference system for evaluating the position of the test score in the team, that is, the index used to evaluate the test score.

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Xu, F., Cai, Y. & Tu, D. Psychometric properties of TAS, TAI, FAT test anxiety scales 6 in Chinese university students: a Bifactor IRT study. Curr Psychol 41, 2250–2263 (2022). https://doi.org/10.1007/s12144-020-00610-w

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