Abstract
The purpose of the study is to establish a online web of computerize attention diagnostic assessment (CADA), provide a model of attention diagnosis, and understand discrepancy of attention performance between general students and students with ADHD(Attention-Deficit/Hyperactivity Disorder). Content of CADA is according to related attention theory and developed ten subtests which classified three factor indexes: image attention, reasonable attention, and verbal attention. It adapted content of test through pretest, selected 250 participants to go on formal test and established norm and CADA scores. In CADA, the Cronbach α. is .824, the correlation coefficient of factor indexes to CADA scores are higher than .7, and construct validity of three factor indexes are .766, .742 and .856. After analysis data of formal test and find some result as follow: 1. There are well reliability and validity in CADA of this study, the explanation of attention at CADA that access educational perspective and application. 2. The performance of attention increase with learning grades at general students (p＜ .01); 3. It got significance lower CADA scores at students with ADHD than general students, also appeared the same result on three factor indexes(p＜ .05); 4. Compared performance of attention with students with ADHD that take medicine or not, CADA scores and three factor indexes of untaken medicine ADHD got lower performance than taken medicine ADHD, and the largest different was at verbal attention. It showed the different influence that medicine for student with ADHD, but the results as above were insignificance because prevalence of ADHD those need to gather more participants and analyze in advance. Finally according the study results and provides suggestions to educator and researcher who implement, reference, and explain result of CADA.