Each client was followed up for at least two years after referral to the project. It was concluded that the treatment programs were not effective in reducing rearrests for DWI or for other misdemeanors and felonies. Arguments can be made that the treatment programs were inappropriate for many of the project's clients. However, strong arguments can also be made that any such experiments, regardless of the treatments tested, are unlikely to produce significant treatment effects because of other aspects of the sanctioning process. (Author abstract)