Lehrer complied all of the latest research about creativity. There were many surprising and interesting insights. Many of which go against the current line of thinking about boosting creativity. For example, employees are more creative and productive when they have offices to work in as opposed to the current open floor plan many work spaces are implementing.
Interesting tidbit: The notion the no idea should be criticized during a brainstorming session is entirely contrary to the related research. Instead of simply accepting every idea, ideas should be criticized. Criticism tends to cause defensive which spurs refinements of the original idea which are usually superior to the original idea. The key is to challenge the idea, not the person, and then offer a an improvement.