Seminar #7
Title: Consistency in Interface Design
Week of March 11th 2019


Consistency in interface design is paramount in developing a usable system. The system must present consistency on several levels: within the application, between applications, and consistent with our perception of the external world. Without consistency the application will fail to achieve the intended purpose of allowing the interface to dissolve into the background of the work environment. As well, a rounded set of principles are needed to ensure most interface designs are usable.


The readings present some points of view which should be followed to promote consistency and usability in interface design. Monk, sees the need for Action-effect and Task-action consistency. While Zuschiag looks at degrees in which inconsistencies can affect an interfaces usability.


With the readings can you adequately discuss the different types of consistency? Can principles be applied to general interface design. Be prepared to discuss the various principles of interface design. After the readings, choose some examples which show your understanding of the principles.

Find examples of consistency Contradiction and Irregularity and present these to the class.



Marks will be awarded for presentation, preparation and participation in the discussion which exhibit emulsion into the subject matter. Students who do not come prepared can expect a low participation mark.