They reflect in my opinion how production forces allow elaboration of the possible theories of anothers mind into channels not previously possible. Terms to describe feelings like I feel angry are not realistically tied to the reality of feelings. That is you don't know my actual state of feelings when I use the word. Motion pictures which show the human face give us more direct information about human feeling, and therefore are more realistic than is writing systems in conveying human feelings. But such conveyance of information in a movie is still conceptually tied to proximity structures in human social cohesion.
Focus groups are about trying to gauge how people feel as well as talk about commodities.
Measuring human feelings through electronic means by-passes the difficulty in really knowing what other people feel through interpreting their words, or how their bodies appear. And this is a strong force upon any business to try to control. What they want to do is ensure that a theory of a products mind is associated to the product. Branding is a good example of the relative movement away from social groups that can be made by business using the processes that arise from the theory of another's mind. From our point of view, creating working class organizations that open up the holism of party structure to the labor process of knowing anothers mind is a new way of understanding creating working class movement social structures.