Keep it Simple Stupid: Using Basic Design Maxims for Effective Communication 
This paper focuses on research results presented by Colin Wheildon in his book, Type & Layout: How Typography and Design Can Get Your Message Across – or Get in the Way. Wheildon’s research was conducted over a nine-year period outside the laboratory, using people who actually consume the printed word. This paper reviews five of the design maxims Wheildon tested and cites opinions @om other design and ppography publications. Wheildon's design maxims aren't complex or new. On the contrary, they are simple design maxims that have been used for hundreds of years.
Smith, Maggie. STC Proceedings (1998). Design>Typography