Command-Set and Presentation Method in the Training of Telidon Operators

Two experiments were conducted concerning the introduction of the Telidon videotex system to novice users. In the first, three training systems, involving training via a videotape presentation, a written manual and a specially designed interactive computer package, were contrasted with Telidon novices who either had computing experience, typing experience or skill in neither of these fields. It was found that computer-experienced subjects had some advantage, but differences between groups and training systems were only apparent in the initial phase of Telidon use. Users tended to prefer the interactive training system. In the second experiment different types of command-word sets were compared in terms of comprehension and preference. Alternative methods of organization of command-words on a command card were also contrasted. Although no significant differences emerged in comprehension, users preferred command words with a close approximation to English and categorization of command-words on the basis of ...