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What is the reaction time resolution of SuperLab Pro?
The resolution of the reaction time (RT) depends on two things: the resolution of the timer itself, and the resolution of the "input device". The RT's resolution will be the lesser of the two.

The timers in SuperLab Pro for Macintosh and SuperLab Pro for Windows are accurate to 1 millisecond or better. So the question really becomes "which input method do I want to use"?

In SuperLab Pro for Macintosh, you can obtain 4 millisecond resolution from an ADB keyboard. To obtain 1 millisecond resolution, you will need one of the following input devices:

• A Cedrus RB Series response pad
• An I/O (input/output) card that you can connect your own response box to
• An SV-1 voice key device

In SuperLab Pro for Windows, the resolution of the keyboard varies from one model and manufacturer to the other, but could be in the range of 20 milliseconds and higher. To obtain 1 millisecond resolution, you will need:

• A Microsoft Serial Mouse.
• A Cedrus RB Series response pad
• An I/O (input/output) card that you can connect your own response box to
• An SV-1 voice key device

The Microsoft Serial Mouse (or compatible) is the most affordable input method and is a practical choice if your experiment does not require more than two keys. Please note that, if the standard mouse that you use to pull menus and click on buttons is already a Microsoft Serial Mouse, you will still need a second, separate mouse for SuperLab Pro for Windows' use. This is the only way to achieve a 1 millisecond resolution.

I was told that 55 milliseconds is the best you can do on a PC.
A distinction should be made between MS-DOS and Windows. 55 milliseconds was the best resolution achievable with MS-DOS and Microsoft Windows up to version 3.0.  But Windows 3.1 and later include timers accurate to 1 millisecond thanks to the advent of multimedia and the need to synchronize sound and video in such applications.

What support options do you offer if I buy SuperLab Pro?
Cedrus offers toll free telephone support anywhere in the United States and Canada. We also offer telephone, web, fax, and email support worldwide for as long as you are using the product.