YUJI ITADORI pencil sketch for my friend Kenma, do you like it so far? (I didn't know who they were, and I looked it up, so if it's the wrong person, I'm sorry)

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 are these signs and what do they mean ?

Dali, the surrealist artist, kept his easel by his bed so that he could paint the dreams that he had right when he woke up from them.