以「魏氏兒童智力量表」（第四版）的四因素為基礎之簡式版本分析：臨床應用指引
摘要
Factor-based WISC-IV tetrads were investigated with the Taiwan WISC-IV standardization sample of 968 children, ages 6 to 16 years old. Various psychometric characteristics, clinical utilities, as well as time constraints were compared among 36 tetrads. By linear equating procedure, current results identified five tetrads with relatively better overall quality. Both the ”Similarities-Matrix Reasoning-Letter Number Sequencing-Symbol Search” and ”Similarities-Matrix Reasoning-Digit Span-Symbol Search” forms exceeded others with respect to validity, content representation, and time saving. The testing time estimates were between 21 to 23 minutes. Three other forms, ”Vocabulary-Matrix Reasoning-Digit Span-Symbol Search”; ”Vocabulary-Block Design-Letter Number Sequencing-Symbol Search”, and ”Similarities-Block Design-Digit Span - Symbol Search” were also considered as optimal options. For all the above five selected tetrads, the mean differences between estimated and actual FSIQ were within 0.01 IQ points, and the correlation were between .92 to .93. They were appropriate for group study. Nonetheless, results also revealed that merely 68-69% of the sample getting their estimated FSIQ within the 95% confidence interval of the true FSIQ. Besides, rankings based on estimated FSIQ were found differ significantly from empirical rankings. The median for ranking difference was around 60 to 70. These factor-based tetrads tend to show under-estimation for children with FSIQ higher than 120. Users are cautioned to use these short forms for screening, and group research purposes only.