I went to a presentation/ meeting last night for commercial photographers. It was interesting and insightful. During the breaks I was speaking with another photographer about how there are focus groups that can measure the impact of copy in an ad. In a sense they can measure that certian words or phrases can increase responses by "X" percent. The concept of applying that to photos came up. I know that there are almost biological responses to certain visual triggers ( baby faces, Colors, Light/dark etc...) anyway, just a rambling to get these thoughts on paper, or screen in this case.