Without being any real expert, I often get asked for advice on resumes/CVs/cover letters/Statements of Purpose by younger people, and there's a recurrent phenomenon I see: inexperienced folks often highlight mildly positive things about themselves (e.g., they presented a poster at their school science fair), which perhaps counterintuitively might end up being overall negative signals to committees. Putting focus on these "weak accomplishments" might signal that the applicants don't know how to properly weigh things (in my opinion, this should be totally normal, but I fear that we're getting to a point where grad school applicants are expected to show a lot of academic maturity to get into top places), or are not well-calibrated with respect to their target community.
Is there some standard name for this phenomenon? Or some writing about it that I could refer people to? It feels similar to the concept of Damning with faint praise, where a mildly positive recommendation letter ends up also being a negative signal. But the particular case I mention is self-inflicted, and furthermore, seems to be worsened when the praise is not "faint"; if someone talks too highly of an accomplishment that is not perceived as relevant or impressive, it might signal an even worse lack of understanding of the etiquette of the target community.