Thursday, February 17, 2011

Book Reading #21 - Design of Everyday Things

Title:
Chapter 7: User-Centered Design

Reference:
Norman, Donald. The Design of Everyday Things. New York: Basic, 2002.

Summary:
In this final chapter of Design, Norman stresses that the user needs to be able to figure out what to do and interpret what is going on.  He tells of how users need to use the knowledge in their heads as well as factors on the device and in the environment in order to understand how to use something.  These should be easy and self-explanatory.  He also notes how the three design models interact, however are not the same: design model, user model, and system image.


Norman says that visible signs should act as reminders.  Design could change the nature of the task with the example of switching from tying laces to Velcro.  Automation can increase people's dependence on it.  


Discussion:
I found it interesting that Norman said, "manuals should be written first, then the design [should] follow the manual."  I think this is an excellent idea, but recognize along with him that constraints make it to where actually following through on this process is not feasible.  Money, time, and ability with probably other factors weigh into this.

He sums up the ideas he has been informing the reader of the entire book.

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