DMASTR Home Page
DMASTR (DisplayMaster) is a suite of programs written for IBM compatible PCs by K.I.Forster and J.C. Forster at the University of Arizona. The software is designed for the measurement and analysis of reaction times in language processing tasks, such as lexical decision, naming, picture naming, RSVP, masked priming, same-different matching, semantic categorization, self-paced reading, etc.
The software was originally written in Macro assembly code for a PDP-11 running under RT-11 (hence the six-letter name), supporting four separate experimental testing stations and a number of editing stations running asynchronously. This work was done at Monash University in Australia, beginning in 1975. Subsequently the code was rewritten in C for a PC/XT, and graphics and speech capabilities were added by Jonathan Forster at the University of Arizona.
As of the summer of 1999, we have added the Windows 95/98 version, called DMDX. This has all the features of the DOS versions, plus some new ones. Contrary to popular belief, running under Windows does not necessarily compromise the accuracy of timing. DMDX makes use of DirectX (which comes as part of Windows 98, or as an add-on to early versions of Windows 95), which gives the programmer better control of the hardware.
Prepared by Kenneth Forster
Department of Psychology
University of Arizona
Last Updated: August 2, 1999