Introduction
I - 2

        Requirements for a major in psychology at larger universities typically include courses with laboratory components. These laboratory components are often based on running experiment simulations on computers and are limited by the resources of the institution in several ways. The first problem with this approach to establishing labs is that funding for equipment and software is aperiodic, whereas hardware and software developments are on a perpetual upward trajectory. Keeping up with the curve seems to be a problem for every department with established student labs; for most, the best they are able to do is occasionally brush against the curve in those years when one-time money becomes available. One possible solution to this problem is to eliminate the need for departments to be financially responsible for the hardware and software used in their laboratories. Internet communications make this possible. With psychology experiments delivered over the Internet, students can run their laboratory exercises from any net-connected computer and departments need only provide the network-based software. PsychExps offers a vehicle for providing that software. This software development program is distinguished from others in that the software is free, multi-platform, easily modifiable, shared with users, and constantly upgraded through the communal efforts of users.