understanding of the cognitive process of viewers

  work on the introduction part of a dissertation (same dissertation you are working right now on. About natural science powerpointnatural science powerpoint). I've attached introduction prat of a dissertation(rough draft) and would appreciate it if you can add more content on it. It is a very weak introduction(It doesn't have enough explanation and opinion why I designed the analysis like experiment 1 and experiment 2. Also, please add why an understanding of the cognitive process of viewers are important) and please make it stronger by adding a logical statement of why this study is needed. Please work directly on the rough draft I uploaded. *Please note comments I added in the draft. (about 5/7 pages) A literature review about experiment 2 is missing. Please, work on a literature review about experiment 2 (volume composition). Please find any past studies and support logically why I'm doing this experiment/why I designed this experiment. Once again, I appreciate your help and support