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<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "User-hostile systems and patterns of psychophysiological activity"^^ . "Psychophysiological measures, which are not contaminated by demand characteristics, are potentially useful for improving systems and for examining psychological processes in human-computer interaction. In this study we report the use of minute-by-minute scored heart-rate (HR) and skin-conductance level (SCL) in a 25-subject experiment. Each subject was presented with two simulated bank-transaction tasks, one user-friendly and the other user-hostile. To check whether any differences were due simply to sheer difficulty, easy (forward digit-span) and hard (backward digit-span) memory tasks were presented to all subjects. The HR was higher during the computer (problem-solving) tasks than the memory tasks, but was unaffected by task difficulty, whereas SCL was uniquely elevated during the hard (user-hostile) computer task. The HR result is interpreted as reflecting parasympathetic withdrawal, while the SCL result suggests that the user-hostile software produced sympathetic excitation of the sort associated with the fight-or-flight reaction. SCL may serve as a good measure of user-friendliness."^^ . "1993" . . "9" . . "Computers in Human Behavior"^^ . . . "Computers in Human Behavior"^^ . . . . . . . . . . . . . . . . . "T."^^ . "Pelcowitz"^^ . "T. Pelcowitz"^^ . . "J.J."^^ . "Furedy"^^ . "J.J. Furedy"^^ . . "A."^^ . "Vincent"^^ . "A. Vincent"^^ . . "Paul"^^ . "Muter"^^ . "Paul Muter"^^ . . . . . . "User-hostile systems and patterns of psychophysiological activity (HTML)"^^ . . . "Abs1993.htm"^^ . . . "Abs1993table1.jpg"^^ . . . "Abs1993table2.jpg"^^ . . . "Abs1993fig1.jpg"^^ . . . "Abs1993fig2.jpg"^^ . . . "User-hostile systems and patterns of psychophysiological activity (Indexer Terms)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #4429 \n\nUser-hostile systems and patterns of psychophysiological activity\n\n" . "text/html" . . . "Human Computer Interaction" . .