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We aimed to develop an item bank of computerized adaptive testing for eating disorders (CAT-ED) in Chinese university students to increase measurement precision and improve test efficiency. A total of 1,025 Chinese undergraduate respondents answered a series of questions about eating disorders in a paper-pencil test. A total of 133 items from four well-validated Chinese-version scales of eating disorders were used to construct the item bank of CAT-ED with the following analysis. First, unidimensionality, model fit, local independence, item fit, discrimination and differential item functioning (DIF) were tested. Then, two simulation studies were applied to test the CAT-ED's effectivity and rationality by calculating concurrent criterion-related validity, sensitivity and specificity. The final item bank comprised 77 items, which met the requirements of local independence, item fit, high discrimination and no differential item functioning in CAT. The mean number of administered items in CAT with the stopping rule fixed at SE [less than or equal to] 0.3 was 11 items. The obtained results showed that CAT-ED had acceptable reliability, validity, sensitivity and specificity.

The Purpose in Life test (PIL) is the best-known measure of meaning in life and has attracted widespread attention for decades. The current study aimed to determine the optimal version of the PIL and to investigate its psychometric properties in the Chinese context. This study was conducted with a Chinese college student sample (N = 986) using confirmatory factor analysis (CFA) and item response theory (IRT). The results indicated that Morgan and Farsides' two-factor solution (PIL-10) showed the best fit to the data among all fifteen PIL versions. In addition, the PIL-10 was demonstrated to be a cross-culturally sound measure with good reliability and validity and has high precision over most of the latent trait range. However, the findings from category response curves showed some problematic options in some items. These findings may serve as references for revision of the PIL-10. [ABSTRACT FROM AUTHOR]