The article is not really talking about abstraction vs concrete details in the sense that you are—it's about the difference between extroverts giving high-level

The article is not really talking about abstraction vs concrete details in the sense that you are—it's about the difference between extroverts giving high-level descriptions and sweeping inferences ("they admitted to engaging in more interpretation – describing things that were not directly visible in the pictures") vs introverts describing images exactly as they are, with their extra words coming in as extra details from the image ("numbers and specific people") and "making more distinctions". In other words, the abstraction isn't an intentional one that is designed to an end, it's creative and knowingly potentially inaccurate. Meanwhile the concrete details aren't a sort of out-of-touch technical rant that's out of reach for the audience, it's that introverts tend to interpret the question literally and actually describe the contents of the photos. One of the researchers' conclusions actually runs directly counter to your introverts-exhibit-worse-social-skills narrative: > "Thus an introvert's linguistic style would induce more situational attributions and a higher perception of trustworthiness than an extravert's style," the researchers said.