Gavin Ambrose & Mr Neil Leonard 
Basics Graphic Design 02: Design Research [PDF ebook] 
Investigation for Successful Creative Solutions

Design Research shows readers how to choose the best method of research in order to save time and get the right results.The book makes readers aware of all the different research methods, as well as how to carry out the most appropriate research for their graphic design projects. All stages of the research process are considered in a dynamic and entertaining style, covering audience, context, trends, sources, documentation, dissemination and more.
Students and designers can benefit from this text by learning fresh ways to analyse information obtained by data gathering, and how best to test and prove decisions. The resulting, well-rounded solutions will be informed, innovative, and aesthetically fitting for the brief.