eggtwo 发表于 2011-12-5 08:48
学习中。建议楼主给出该软件的大致介绍,......
Iteman™ 4 is a software program designed to provide detailed item and test analysis reports using classical test theory (CTT). The purpose of these reports is to help testing programs evaluate the quality of test items, and tests as a whole, by examining their psychometric characteristics. Output is RTF format, allowing you to type/paste in item texts and comments and deliver a comprehensive report to stakeholders or content experts.
Iteman™ 4 (currently version 4.2) is distinguished by its user-friendly interface that makes it easy to run the program, even if you are not an expert in psychometrics. Teachers, school administrators, certification managers, training coordinators, and instructional designers can all use Iteman™ 4 to produce professional psychometric reports. Click here to see an example report as a PDF.
Important features
Output is full-featured reports in Word, not ASCII or many separate images you have to cut and paste
Extensive graphics: quantile plots for each item, SEM, frequency distributions, bivariate plots
Differential item functioning (DIF)
Multiple reliability indices
Scaled scoring
Mastery analysis: SEM at cutpoint, classification consistency
Ideal for NCCA reports
The most complete item analysis system available
What's New in Iteman™ 4
Iteman™ 4 offers several substantial improvements from the previous version, ITEMAN™ 3.6:
The most important advantage is the addition of graphics. It is now possible to produce an item quantile plot for each item.
Iteman™ 4 is able to handle pretest (trial or unscored) items, items that are not included in the final score but where statistics are still desired.
More statistics are calculated, including the alpha (KR-20) reliability coefficient with each item deleted, and subgroup P (proportion correct) statistics.
Instead of simple ASCII text files, the output is now rich text file (RTF) format laid out as a formal report, and also in a comma-separated value (CSV) format that is able to be manipulated (sorted, highlighted, etc.) in spreadsheet software. It additionally produces a CSV file of examinee scores and subscores.
Scaled scoring can be applied, so that Iteman 4 can be used to score sets of examinees in more testing programs and provide scores on any linearly transformed scale.
Items can be analyzed relative to an external score rather than the total score on a test.
The maximum number of items that can be analyzed has been increased to 10,000, with no limit on the number of examinees.
A “batch” type of capability, using a “multiple runs file” has been added to allow you to run multiple data sets without having to use the graphic user interface for each run.
Iteman 4 can analyze both dichotomous (correct/incorrect) and polytomous (ratign scale or partial credit) data, including tests that are a mix of both item types.
What does Iteman™ 4 look like?
Using Iteman 4 is straightforward: simply name the relevant files and then utilize the friendly interface to specify options for your results. One tab of the options is devoted to scoring...