Comments may also be included in the data file. A line specifying which items are to be included in the analysis and 5. A line of the numbers of alternatives for the items 4. An example of a data file in the proper input format is shown in Figure 2-1. The only differences in format reflect the ability of ITEMAN to analyze more than one scale at a time and to analyze data for multipoint or rating-scale-type items. The File FormatThe proper format for the input file is similar for all the Item and Test Analysis Package programs. Up to 750 items can be included in a single analysis, while the number of examinees is virtually unlimited. All the data to be included in the analysis must be contained in a single input file.
This can be accomplished through the use of the ITEMAN for Windows text editor, Notepad, a word-processing editor that produces true ASCII output, or a program written specifically to format your data. New York: Holt, Rinehart and Winston.Ĭhapter 2: Formatting Examinee DataOverviewThe ITEMAN program requires that input data be formatted in ASCII (text-only) files. Introduction to classical and modern test theory.
The bookmark entries are hyperlinks that will take you directly to any section of the manual that you select. Table of ContentsTo view the Table of Contents for this manual, select the Bookmark tab on the left side of the Acrobat window. You might wish to refer to a basic textbook on test theory and methods such as Crocker and Algina (1986) for a brief review if the terms in Chapter 3 seem unfamiliar to you. Although Chapter 3 describes each statistic that is computed, it assumes some knowledge of the proper use and interpretation of these statistics.
This manual will tell you how to install and run the ITEMAN program. See Chapter 3 for a complete description of the ITEMAN program and information on the specific statistical indicators available with ITEMAN. In addition to item-level statistics the ITEMAN program also provides statistical indicators on the performance of the test as a whole (e.g., mean, standard deviation, reliability, median p-value). ITEMAN analyzes test and survey item response data and provides conventional item analysis statistics (e.g., proportion/percentage endorsing and item-total correlations) for each item, in order to assist in determining the extent to which items are contributing to the reliability of a test and which response alternatives are functioning well for each item. Windows is the Registered Trademark of Microsoft Corporation.Ĭhapter 1: OverviewOverviewITEMAN is one of the analysis programs that comprise Assessment Systems Corporations Item and Test Analysis Package. ITEMAN is the Trademark of Assessment Systems Corporation. Paul, Minnesota 55114 Voice: 65 FAX: 65 E-Mail: Users Manual for the ITEMAN Conventional Item Analysis Program Second Edition, 32-bit Windows VersionĬopyright 1989-2006 by Assessment Systems Corporation All Rights Reserved No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any meanselectronic, mechanical, photocopying, recording, or otherwisewithout the prior written consent of the publisher.
System RequirementsPersonal computer running Microsoft Windows 95/98/NT/ME/or XP 2 Mb free RAMįor Further InformationAssessment Systems Corporation 2233 University Avenue, Suite 200 St. Manual for the 32-bit Windows Version 3.6 Users Manual for the ITEMAN Conventional Item Analysis Program