Icons, Pedagogic Vectors, Forms Design and Posture

This entry is part 9 of 12 in the series Medical Computing

Icons and Pedagogic Vectors We all have trouble remembering a program’s graphical icons. The International Standards Organisation (ISO) has a standard for icons – an icon must be interpreted correctly by 2/3 of  test subjects. In usability and error-prevention terms, a 1/3 error rate is poor, but reality is even worse – an experimental study […]


Usability, Learnability, Memorability

This entry is part 1 of 12 in the series Medical Computing

(A version of this series was first published in the newsletter of the Informatics Section of the American College of Emergency Physicians) Those of you who know me (or maybe have just heard about me) know that I am a zealot about user interface design. With good reason! Those who think they are computer-illiterate are […]