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Abstract
‘Sesame interactive video thesaurus' is an interactive video system that gives access to a large picture database on video disc and a large verbal database on hard disc. The system can be used as a reference centre by patients and therapists, but also as a training and learning environment for the aphasic adult. The program allows easy access to picture, lexical and grammatical information. Search-cues include orthographic and/or semantic information. Operation is by keyboard and/or mouse. Lexical information is stored in a semantic relational database developed to simulate the semantic networking in the human mind. It allows the user to browse through lexical networks with a minimum of effort. Data are organized in categories and subcategories, are connected through relationships and descriptions, and appear in alphabetic cohorts so that recognition (i.e. reproduction) of data is sufficient for retrieval. A pilot-version of the program has been tested with aphasic patients. This included an evaluation of the user friendliness of the program and qualitative and quantitative data regarding the use of the program by therapists and patients. Learning effects included in the evaluation were the specific information and strategies acquired while using the program, and their generalizability to everyday communication.