Talk:Decision making skills
From apppm
Interesting topic. See how you can focus it on projects programs or portfolios (or all of them but then discuss what changes in each case), otherwise it will be too general for the cope of the course.
You mention: "More complicated decisions tend to require a more formal, structured approach, usually involving both intuition and reasoning". I suggest you try to present some of the more formal and structured approaches, would be interesting to see what's out there. Also, what is considered a "complicated decision"? It can be quite subjective.
I would be careful with references since this topic is closer to social science and I am sure you can find many serious or not so good references online.