This subject in design is very actual and just great! Specific international conferences are organised on "design & emotion" by the Design and Emotion society and on "communicative product design" by the Nordcode network. For you this subject is important because by analysing the various messages, symbols and aesthetics in a product's design you can identify as a marketing executive what the product should express. You can also benchmark the product's expressions with those of competing products. This can be a valuable input from marketing into the product creation process, allowing the creation of successful products.