Marketers have been using logic and emotion for years in selling their products and services. So how does this work?
It's all about the decision making process and the triggers that make a difference between yes or no. Sometimes these triggers can be impulses, or they are coupled with logic or they relate to your emotions.
Emotion is when you buy based on what they desire to possess - not on what you think. Although, your desires are present on a very deep level, you are still capable of feeling them and being aware of their existence. Emotions have a hard-fought impact on your buying decision.
Logic is how you use your mind to justify what you want. For instance, I am buying this car because it gets good gas mileage and has a terrific warranty (logic). I am buying this car because I look really good in red and my hair looks brilliant with the top down (emotion).