How can analyzing a painting solve a real world problem?

One of the researchers mentions that he is looking for "affiliation cues" in the video recordings of the experiment. how would you describe what these affiliation cues indicate?

What section of a jazz band is made up of piano, bass, and drums? a - melodic section b - brass section c - secondary section d - rhythm section

Visual rhythm indicates movement and suggests unity of form by the repetition of elements.