September 23, 2020
Demo Version 8.4
Mplus Version 8.4 Demo is now available for download at no cost for Windows operating systems, Mac OS X, and Linux operating systems. The demo version contains all of the capabilities of the regular version of Mplus. They include:
The Mplus Demo Version is limited only by the number of variables that can be used in an analysis.
Following are the limitations:
All features in Mplus Version 8.4 Base Program and Combination Add-On are available in Mplus Version 8.4 Demo. Read more about these features. Mplus commands and options are described in A Summary of the Mplus Language. Most of the examples found in the Mplus section can be run using the demo version. These include: cont3, cont6, cont10, mix1-mix6, mix8-mix11, mix14, and penn1-penn7. Other examples need to be modified to not exceed the limitations described above.
Muthén & Muthén holds the copyright for the Mplus Demo Version. The Mplus Demo Version may be copied but may not be altered or sold.
Note: Demo Version 8.4 is not available for Windows XP/ME/Vista, Mac OS X 10.10 or earlier and 32-bit Linux operating systems.
Installing the Mplus Demo Version
Attention all Mac OS X users:
Mac OS X may report that the Mplus installer file for Mac OS X is damaged. This is because the GateKeeper app on Mac OS X is preventing the installation of Mplus. The default setting in GateKeeper is to prevent the installation of any third party software not purchased from the Mac App Store. For more information on GateKeeper and how to disable this block, please refer to the following Knowledge Base article from Apple.
Attention Mac OS X 10.15 (Catalina) users:
There is an incompatibility issue with the Mplus Demo Installer on Mac OS X 10.15 (Catalina). Instead of using the installer, download the following image (DMG) file: MplusDemoMac.dmg. After successfully downloading the DMG file, open it. A window with the MplusDemo folder inside will open. Grab and drag the MplusDemo folder to the Applications folder.
The Mplus Demo app files will be detected by the OS as from an unidentified developer and will be blocked when you try to open them. Refer to the following guide from Apple:
To override your security settings for the Mplus apps, control-click the following app icons: Mplus Demo Editor, Diagrammer Demo, and mpdemo. These apps can be used like all others after this initial setup.
Using the Mplus Demo Version
The Mplus Demo Version for Windows and Mac OS X come with the Mplus Editor or can be run from the command line. The Mplus Demo Version for Linux operating systems is available only from the command line.
Command-Line for Mac OS X and Linux Operating Systems
First, open a shell. Verify that the environment variables have been set to
include the Mplus installation directory in the PATH environment variable by typing:
$ which mpdemo
To run Mplus through Windows, click on the Start button, click on the Programs button, and then click on Mplus. The menu bar contains the menu item Mplus. This offers two options: Language Generator and Run Mplus. Mplus can also be run by clicking on the RUN button. A user can use an existing input setup, create a new input setup using the editor, or use the language generator to create an input setup.
Version 8.4 of Mplus includes a language generator to assist in preparing input files. The Mplus Language Generator takes users through a series of screens to help them quickly set up an Mplus input file. The language generator contains all of the Mplus commands except DEFINE, MODEL, and MONTECARLO. Hints for using the Mplus Language Generator are included under the Help menu.