Lately, however, researchers are turning to the web as a place to conduct experiments with large groups of subjects. Yes, there are issues regarding control (e.g., if you need native speakers of English, how can you ensure that a subject really is a native speaker?), but these issues come up in all types of experimental paradigms. I believe that good standards and practices to ensure quality online psycholinguistic experiments will emerge over time. So, I'm all for moving ahead.
With that in mind, here are a set of sites offering online psycholinguistic experiments:
- The Max Planck Institute for Psycholinguistics -- Online experiments
- The Portal for Psychological Experiments on Language (largest selection of experiments, that's a modified screen grab of some of their experiments above)
- University of Edinburgh School of Informatics, Blizzard Challenge 2008 (this is actually an evaluation of speech synthesis, but good enough for starters).