Hello! Here are a few comments to your questions: 

1. The Track Changes feature seems to have corrupted my edit here. It should be as follows: "The importance of clarifying the salient aspects of a goal has been..."
2. I recommend using "prominence", as that's the term used in the previous sentence. If you change one, change the other (although see my comments on #3 below first).
3. If you're referring to the first choice as the "prominent" choice, then I would suggest using the word "primary" instead: "The primary attributes, i.e. the first ones chosen by respondents, are weighted..." Keep the article at the beginning (don't start with "prominent") I would suggest only using "often" if there is an instance in which you do not weigh the first response as prominent. Otherwise, someone reading may question consistency in the methodology. 
4. Grammatically speaking, I would suggest the following: "Both models' results contain a reduced regression and full regression analyses." 

Let me know if you need anything else! Thanks. =)