Emerging AI techniques will make possible new intelligent help features, such as ‘active help’ (interrupting the user when appropriate) and ‘back channel’ communication (allowing users to send a message to a help system). An investigation was conducted to determine whether these features would be useful. In the experiment, users of a job scheduling application liked active help and performed better with it than did people without it. However, having a back channel was not particularly valuable to participants. Since developing this feature requires a lot of work, one should find evidence that it will be worth the effort before proceeding. 0 1998 Elsevier Science B.V.
J. S. Davis