Some of the article seems more obvious if flipped around... watch some teens/kids tease each other, you'll hear a lot of language along the lines of one kid def

Some of the article seems more obvious if flipped around... watch some teens/kids tease each other, you'll hear a lot of language along the lines of one kid defining what the other kid "is", not much oblique talk about the success or failure of one individual purchase of clothing to match their current little tribal affiliation. Enforcement of conformity is enforcement of conformity, regardless of the morals/ethics of the conformity itself, so a study of it is incomplete if it only includes the behaviors of the happy sunshine people or only includes parent/child interactions. The interesting part of the article was the quantitative analysis of experimental evidence, not so much that evolution seems to have produced a species that's pretty good at tribal-scale interpersonal dynamics and learning everything by copying superiors. The qualitative analysis seems obvious given the model, so good experimental numbers indicates the popular qualitative model is likely correct.