The authors evaluated measurement-level, factor-level, item-level, and scale-level revisions to the Gifted Rating Scales–School Form (GRS-S). Measurement-level considerations tested the extent to which treating the Likert-type scale rating as categorical or continuous produced different fit across unidimensional, correlated trait, and bifactor latent factor structures. Item- and scale-level analyses demonstrated that the GRS-S could be reduced from a 72-item assessment on a 9-point rating scale down to a 30-item assessment on a 3-point rating scale. Reliability from the reduced assessment was high (ω > .95). Receiver operating characteristic (ROC) curve comparisons between the original and reduced versions of the GRS-S showed that diagnostic accuracy (i.e., area under the curve) of the scales was comparable when considering cut scores of 120, 125, and 130 on the WISC-IV Full Scale (Wechsler Intelligence Scale for Child–Fourth Edition) and verbal IQ and the WIAT-III (Wechsler Individual Achievement Test–Third Edition) composite score. The findings suggest that a brief form of the GRS-S can be used as a universal or selective screener for giftedness without sacrificing key psychometric considerations.

中文翻译：

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重新考虑 GRS-S 的心理测量学：测量中简约的证据

作者评估了对天才评定量表 - 学校表格 (GRS-S) 的测量级别、因素级别、项目级别和量表级别的修订。测量层面的考虑测试了将李克特型量表评级作为分类或连续的在多大程度上产生了跨一维、相关性状和双因素潜在因素结构的不同拟合。项目和量表级别的分析表明，GRS-S 可以从 9 点评分量表上的 72 个项目评估减少到 3 点评分量表上的 30 个项目评估。简化评估的可靠性很高（ω > .95）。GRS-S 原始版本和简化版本之间的接受者操作特征 (ROC) 曲线比较表明，在考虑 120 分时，量表的诊断准确性（即曲线下面积）具有可比性，125 和 130 在 WISC-IV 全量表（韦克斯勒儿童智力量表第四版）和语言智商以及 WIAT-III（韦克斯勒个人成就测试第三版）综合得分上。研究结果表明，GRS-S 的简短形式可以用作天才的通用或选择性筛选器，而不会牺牲关键的心理测量因素。