The Questionnaire For User Interaction Satisfaction (QUIS) is a tool developed to assess users' subjective satisfaction with specific aspects of the human-computer interface. It was developed in 1987 by a multi-disciplinary team of researchers at the University of Maryland Human – Computer Interaction Lab. The QUIS is currently at Version 7.0 with demographic questionnaire, a measure of overall system satisfaction along 6 scales, and measures of 9 specific interface factors. These 9 factors are: screen factors, terminology and system feedback, learning factors, system capabilities, technical manuals, on-line tutorials, multimedia, teleconferencing, and software installation. Currently available in: German, Italian, Portuguese, and Spanish. Background When the QUIS was developed, a large number questionnaires concerning user subjective satisfaction had been developed. However, few of these exclusively focused on user evaluation of the interface itself. This was the motivation for the development of the QUIS Version 1.0 In 1987, Ben Shneiderman presented a questionnaire that directed user attention to focus on their subjective rating of the human-computer interface. While this questionnaire was a strong step towards focus on users' evaluations of an interface, no empirical work had been done to assess its reliability or validity. Version 2.0 This original questionnaire consisted of 90 questions in total. Of these questions, 5 were concerned with rating a user's overall reaction of the system. The remaining 85 were organized into 20 groups which, in turn, consisted of a main component question followed by related subcomponent questions. The reliability of the questionnaire was found to be high with Cronbach's alpha=.94 Version 3.0 QUIS Version 2.0 was modified and expanded to three major sections. In the first section, there were three questions concerned with the type of system under evaluation and the amount of time spent on that system. In the second section, four questions focused on the user's past computer experiences. The last section, section III, included the modified version of QUIS Version 2.0, now containing 103 questions. These modifications included changing the 1-10 rating scale to be from 1-9, which 0 used as "not applicable". This also simplified future data entry for the questionnaire since a maximum rating would no longer require two keystrokes (as it would have in "10"). This in turn would reduce response bias from subjects. Version 4.0 Chin, Norman and Shneiderman (1987) administered the QUIS Version 3.0 and a subsequent revised Version 4.0 to an introductory computer science class learning to program in