中華心理學刊
民9 7 ， 5 0 卷， 1 期， 9 1 - 1 0 9

Hsin-Yi Chen（Department of Special Education, National Taiwan Normal University）；Mau-Sun Hua（Department of Psychology, National Taiwan University）；Jianjun Zhu（The Psychological Corporation, U.S.A）；Yung-Hwa Chen（The Chinese Behavioral Science Corporation）

Abstract

Factor-based WAIS–III tetrads were investigated with the Taiwan WAIS–III standardization sample of 888 normal adults, ages 16 to 84 years old. Various psychometric characteristics, time constraints, as well as qualities of estimation among prorating and linear equating procedures, were compared among 54 tetrads. Our results supported the use of the linear equating procedure. The Similarities-Matrix Reasoning-Arithmetic-Digit Symbol form exceeded others with respect to validity, content representation, and time saving. Kaufman's (1990) Similarities-Picture Completion-Arithmetic-Digit Symbol combination, and the Information-Picture Completion-Arithmetic-Digit Symbol short forms were both among the most efficient estimations. For clinicians who highly value the clinical information of Block Design, two other forms, Similarities-Block Design-Arithmetic-Digit Symbol and Information-Block Design-Arithmetic-Digit Symbol, were found providing better estimation quality. Nonetheless, current findings revealed that even preferred tetrads had substantial misclassification rates, and these factor-based tetrads tend to show under-estimation for people with top abilities. Users are cautioned to use these short forms for screening purposes only. Results of this study are consistent with literature and assist in choosing among WAIS-III factor-based tetrads by providing their relative psychometric quality. 

Keywords: WAIS–III, short form, Taiwan norm