A pilot study was conducted to investigate the application of the PLATO IV system to training interpersonal skills. As part of the development of an experimental design to be undertaken in the future, several activities were involved. Suitable interpersonal skills were considered and a single one, giving effective performance feedback, was chosen for the pilot study. Training materials for this skill were developed and coded into the PLATO IV system. A small sample of experimental and control subjects was tested and trained, and data about their feedback skill performance and companies' performance were collected and analyzed. It appears that the training had some effect on skill performance. The proposed experimental design was evaluated as suitable for application to a larger study. (Author)