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flexMIRT是可用的先進的IRT軟件，一個用于項目分析和測試評分的多層次、多維和多組項目反應理論（IRT）軟件包。flexMIRT適用于各種一維和多維項目反應理論模型（也稱為項目因素分析模型）以及診斷分類模型，適用于任一數量組的單水平和多水平數據。
flexMIRT是易于使用的
基于Windows的flexMIRT具有圖形用戶界面（GUI），有64位版本。它具有直觀的語法，可以在命令行模式下無縫運行，以實現大批量生產。用戶手冊演示了各種帶有注釋的輸入和輸出的分析。
flexMIRT是靈活的
我們的IRT軟件可以適用于各種項目級模型，包括1PL、2PL、3PL、分級響應模型、廣義部分信用模型和診斷分類模型。它能夠適應多個維度、數據內的依賴性（即多水平）、交叉隨機效應、協變量和潛在特征的偏離正態性。
flexMIRT是快速的
隨著現代CPU架構朝著多核設計的方向發展，flexMIRT使用并行處理，通過將負載自動分配到多個可用的核心或處理單元來進一步加快計算速度。在可能的情況下，flexMIRT使用降維來自動減少多維或多級模型的集成維數。
flexMIRT可以處理大型數據集
一種新設計的內存分配方案有助于flexMIRT有效地處理數千個項目和數百萬受訪者。適合需要物品反應理論模型的任一尺寸分析。
支持的版本
穩定版本：版本 3.6.5
候選版本：不適用
已棄用版本：版本 3.5x
所有支持的版本：版本 3.0+
注意：
目前，目前不提供任一程序的本機Mac版本。但是，如果您有雙啟動設置或 Windows 模擬器，只要您的硬件由于已知的兼容性問題而不使用 Apple 專有的基于 ARM 的芯片，任一程序都應該正常運行。請注意，只能提供對使用該軟件的支持，無法提供有關設置 Mac 以允許程序可用的指導。Parallels Desktop 是常用的模擬器。VirtualBox是Oracle的免費替代品，但與Parallels相比，它可能有點慢。
英文：
A multilevel, multidimensional, and multiple group item response theory (IRT) software package for item analysis and test scoring. flexMIRT fits a variety of unidimensional and multidimensional item response theory models (also known as item factor analysis models) as well as diagnostic classification models to single-level and multilevel data in any number of groups.
flexMIRT is easy to use
Windows-based flexMIRT has a graphical user interface (GUI) and is available in 64-bit version. It has an intuitive syntax and can be run seamlessly in a command line mode for high volume production. The user’s manual demonstrates a variety of analyses with annotated input and output.
flexMIRT is flexible
Our IRT software can fit a wide variety of item-level models including 1PL, 2PL, 3PL, Graded Response Model, Generalized Partial Credit Model, and Diagnostic Classification Models. It is able to accommodate multiple dimensions, dependence within the data (i.e., multilevel), crossed random effects, covariates, and departures from normality in the latent trait(s).
flexMIRT is fast
As modern CPU architecture trends toward multi-core design, flexMIRT uses parallel processing to further speed up computations by spreading the load automatically to the multiple available cores or processing units. When possible, flexMIRT uses dimension reduction to automatically reduce the number of dimensions of integration for multidimensional or multilevel models.
flexMIRT can handle large datasets
A newly-designed memory allocation scheme helps flexMIRT efficiently handle thousands of items and millions of respondents. Great for any size analysis where item response theory models are needed.
Supported Versions-flexMIRT
Stable release: Version 3.6.5
Release candidate: n/a
Deprecated versions: Versions 3.5x
All supported versions: Versions 3.0+
Note:
Currently we offer no native Mac version of any of our programs currently available. However, if you have a dual-boot set-up or a Windows emulator, any of our programs should run without issues as long as your hardware is not using Apple’s proprietary ARM-based chips because of known compatibility issues. Note that we can only provide support for using the software and are unable to provide guidance on setting up a Mac to allow for a program to be usable. Parallels Desktop is the most frequently used of the emulators. VirtualBox is a free alternative from Oracle, but it can be very slow compared to Parallels.
