Multipoint scales: Mean and median differences and observed significance levels

References

• Blalock , H. M. 1972 . Social statistics , New York : McGraw‐Hill .
   Google Scholar
• Bradley , J. V. 1973 . The central limit effect for a variety of populations and the influence of population moments . Journal of Quality Technology , 5 : 171 – 177 .
   Google Scholar
• Bradley , J. V. 1976 . Probability, decision, statistics , Englewood Cliffs, NJ : Prentice‐Hall .
   Google Scholar
• Bradley , J. V. 1978 . Robustness? . British Journal of Mathematical and Statistical Psychology , 31 : 144 – 152 .
   Web of Science ®Google Scholar
• Carayon‐Sainfort , P. 1992 . The use of computers in offices: Impact on task characteristics and worker stress . International Journal of Human‐Computer Interaction , 4 : 245 – 261 .
   Google Scholar
• Davis , S. and Bostrom , R. 1992 . An experimental investigation of the roles of the computer interface and individual characteristics in the learning of computer systems . International Journal of Human‐Computer Interaction , 4 : 143 – 172 .
   Google Scholar
• Davison , M. L. and Sharma , A. R. 1988 . Parametric statistics and levels of measurement . Psychological Bulletin , 104 : 137 – 144 .
   Web of Science ®Google Scholar
• Davison , M. L. and Sharma , A. R. 1990 . Parametric statistics and levels of measurement: Factorial designs and multiple regression . Psychological Bulletin , 107 : 394 – 400 .
   Web of Science ®Google Scholar
• Emory , C. W. 1976 . Business research methods , Homewood, IL : Richard D. Irwin .
   Google Scholar
• Grove , J. W. 1989 . In defence of science: Science, technology, and politics in modern society , Toronto : University of Toronto Press .
   Google Scholar
• Harris , R. J. 1985 . A primer of multivariate statistics , Orlando, FL : Academic .
   Google Scholar
• Henning , R. A. , Sauter , S. L. and Krieg , E. F. 1992 . Work rhythm and physiological rhythms in repetitive computer work: Effects of synchronization on well‐being . International Journal of Human‐Computer Interaction , 4 : 233 – 243 .
   Google Scholar
• Klugh , H. E. 1970 . Statistics: The essentials for research , New York : Wiley .
   Google Scholar
• Lewis , J. R. 1989 . The relative reliabilities of mean and median differences as indicators of statistically significant differences for 7‐point scales , (Report No. 54.532) Boca Raton, FL : IBM Corporation .
   Google Scholar
• Lewis , J. R. 1991a . Psychometric evaluation of an after‐scenario questionnaire for computer usability studies: The ASQ . SIGCHI Bulletin , 23 : 78 – 81 .
   Google Scholar
• Lewis , J. R. 1991b . An after‐scenario questionnaire for usability studies: Psychometric evaluation over three trials . SIGCHI Bulletin , 23 : 79
   Google Scholar
• Lewis , J. R. . Psychometric evaluation of a post‐study system usability questionnaire: The PSSUQ . Proceedings of the Human Factors Society 36th Annual Meeting . Santa Monica, CA : Human Factors Society .
   Google Scholar
• Lewis , J. R. , Henry , S. C. and Mack , R. L. 1990 . “ Integrated office software benchmarks: A case study ” . In INTERACT ‘90 , London : North‐Holland .
   Google Scholar
• Lord , F. M. 1953 . On the statistical treatment of football numbers . American Psychologist , 8 : 750 – 751 .
   Google Scholar
• Mueller , J. H. , Schuessler , K. F. and Costner , H. L. 1977 . Statistical reasoning in sociology , Boston : Houghton Mifflin .
   Google Scholar
• Nunnally , J. C. 1978 . Psychometric theory , New York : McGraw‐Hill .
   Google Scholar
• Piotrkowski , C. S. , Cohen , B. G. F. and Coray , K. E. 1992 . Working conditions and well‐being among women office workers . International Journal of Human‐Computer Interaction , 4 : 263 – 281 .
   Google Scholar
• Steele , R. G. D. and Torrie , J. H. 1960 . Principles and procedures of statistics , New York : McGraw‐Hill .
   Google Scholar
• Stevens , S. S. 1959 . “ Measurement, psychophysics and utility ” . In Measurement: Definitions and theory , Edited by: Churchman , C. W. and Ratoosh , P. New York : Wiley .
   Google Scholar
• Townsend , J. T. 1990 . Truth and consequences of ordinal differences in statistical distributions: Toward a theory of hierarchical inference . Psychological Bulletin , 108 : 551 – 567 .
   PubMed Web of Science ®Google Scholar
• Townsend , J. T. and Ashby , F. G. 1984 . Measurement scales and statistics: The misconception misconceived . Psychological Bulletin , 96 : 294 – 401 .
   Web of Science ®Google Scholar
• Westlander , G. and Aberg , E. 1992 . Variety in VDT work: An issue for assessment in work environment research . International Journal of Human‐Computer Interaction , 4 : 283 – 301 .
   Google Scholar
• Zapf , D. , Brodbeck , F. C. , Frese , M. , Peters , H. and Prumper , J. 1992 . Errors in working with office computers: A first validation of a taxonomy for observed errors in a field setting . International Journal of Human‐Computer Interaction , 4 : 311 – 339 .
   Google Scholar