DMDX

DMDX: Free Psychology Experiment Software

DMDX is a software for conducting psychology experiments and displaying visual and auditory stimuli. It allows for precise stimulus and response timing and is particularly suited for cognitive psychology experiments. DMDX is free, open source, and runs on Windows.

What is DMDX?

DMDX is an open source software tool for designing and running psychology experiments, particularly those involving response time measurements. It was developed starting in the 1990s by Kenneth Forster and Jonathan Forster at the University of Arizona.

DMDX allows researchers to easily program experiments using a text-based scripting language. Stimuli such as text, images, and sounds can be precisely timed and presented to participants, and response data (such as keyboard or mouse input) can be accurately recorded with millisecond precision. The software handles screen rendering, audio playback, and response capture in a highly optimized way to provide accurate and consistent timing.

Some of the key features of DMDX include:

• Precise stimulus presentation timing
• Accurate response time measurements
• Support for visual and auditory stimuli
• Text-based scripting language for programming experiments
• Output of results as text files for further analysis
• Free and open source for non-commercial use

DMDX runs on Windows systems and has been widely used in reading, psycholinguistics, cognitive psychology, and experimental psychology research for over 20 years. It continues to be maintained and updated by Forster and is popular for its precision, flexibility, and ease of learning compared to many other psychology experiment software options.

DMDX Features

Official Links