8 key rules that are easy to remember and use clear principles about how to design effective slides based on established scientific data Quick steps to sharpen and strengthen your presentation Easy to use list guides you through every aspect of your presentation This chapter is structured to help you prioritize the most effective edits Memorable examples and illustrations to show what works, and what does not The lesson in what to improve also can help you make the first concept the sooner the better. If you have a PowerPoint presentation that does not give you the results you want, take advantage of what scientific research can tell you about how your audience to see and think about what you say.