ConQuest Version 是一種電腦程式安裝項目反應（Rasch）和潛在回歸模型。它提供了一系列全面，靈活的項目反應模型（IRM）的分析，讓他們檢查的業績評估的屬性，傳統的評估和評價尺度。ConQuest 還提供了更廣泛的測量和研究界最先進的最新心理測量方法多方面的項目反應模式，多層面的項目反應模型，回歸模型和圖紙潛在可能的值。
ACER ConQuest 5 新版特色
ACER ConQuest 5 is a computer program for fitting both unidimensional and multidimensional item response and latent regression models. It provides data analysis based on a comprehensive and flexible range of item response models (IRM), allowing examination of the properties of performance assessments, traditional assessments and rating scales. ACER ConQuest 5 also offers wider measurement and research community analysis procedures based on the most up-to-date psychometric methods of multifaceted item response models, multidimensional item response models, latent regression models and drawing plausible values.
ACER ConQuest Version 5 software includes:
A choice of marginal maximum likelihood, joint maximum likelihood or Bayesian Markov Chain Monte Carlo (MCMC) estimation
With MCMC estimation, the ability to add random effects to the item response model
Implementation of multidimensional and multifaceted Bock model and generalised partial credit model (GPCM)
Estimation of the Bradley–Terry–Luce (BTL) model for pairwise comparisons
Direct reading of SPSS data files and CSV text files
Output of results to SPSS, EXCEL, CSV or other text files
A wide array of graphical outputs, including Wright maps, Wright predicted probability maps, likelihood plots and information maps
Person fit and residuals
Latent variable path modelling
Mantel-Haenszel DIF estimates
Powerful manipulation of matrix variables and control logic (if, while, do) for advanced modelling, including specifying custom design matrices or fitting iterative models.
Integration with R through the conquestr library
Advanced features, including the ability to impose new constraints on GPCM models, including imposing maximum and positive scores, as well as freely estimated variances through slope constraints.
ACER ConQuest 5 is available with both a graphical user interface (GUI) and a simple command line, or console, interface. The software is available in Windows and Mac versions:
Windows: contains both the GUI and console versions for 32-bit and 64-bit Windows operating systems.
Mac: contains only the console version for the 64-bit Mac operating system. No GUI is available. ACER ConQuest for Windows can also be used on Macs running Windows.
ACER ConQuest 5 comes with a range of online resources and access to prompt email support.
項目反應理論 (Item Response Theory，簡稱IRT) 包括以下軟體:
BILOG-MG, IRTPRO, and PARSCALE for Windows
IRTPRO for Windows 特色：
IRTPRO，這是一項在目前的技術尖端的產品。該方案已於微軟的 Windows平台的 Windows7，Vista和 XP操作系統上經過廣泛的測試。
IRTPRO 發展得到了NIH的SBIR計劃合同HHSN-2612007-00013C 題為：
IRTPRO imports data from a variety of statistical software packages as well as importing data from fixed format data (.fixed), comma-separated (.csv), tab-delimited (usually .txt), and Excel (.xls) files. Whatever the original format, the imported data are saved to an IRTPRO data file with extension .ssig that is displayed visually as a spreadsheet, similar in appearance to an Excel spreadsheet.
IRT models for which item calibration and scoring are implemented in IRTPRO are based on unidimensional and multidimensional [confirmatory factor analysis (CFA) or exploratory factor analysis (EFA)] versions of the following widely used response functions:
o Two-parameter logistic (2PL) [with which equality constraints includes the one-parameter logistic (1PL)
o Three-parameter logistic (3PL)
o Generalized Partial Credit