「中文色塊測驗」之Rasch模式分析

Rasch Modeling of Mandarin Token Test Performance

本研究旨在應用Rasch模式來分析與探討「中文色塊測驗」之效度。研究樣本為2，000名3至6歲兒童。主要研究結果有四項：首先，Rasch模式適合度分析結果顯示絕大部分試題的適合度良好。其次，本研究以同時估計法進行垂直量尺化，並分別將各年齡組受試者設為參照組來校準試題難度，雖然施測題目不同，但所得到的能力估計值是可以相互比較的。最後，本研究發現試題難度隨著口語指令長度與複雜度而遞增，共同試題難度則隨受試者所屬年齡層增加而遞減。

The purpose of this research was to examine the validity of the Mandarin Token Test within the framework of Rasch analysis. Two thousand children aged 3 to 6 were employed as the subjects of the research. The major findings can be summarized as follows. First， most of our test items demonstrated good model fit. Second， we used concurrent estimation to achieve vertical scaling and rescaled the performance of each age group with one other age group as reference alternately. As such， despite the different choice of test items across age groups， it is possible to compare the estimates of their abilities with vertical scaling. Finally， the results showed that item difficulty increased as complexity and length of commands increased and the difficulty of common items decreased with age.