Nomad
Master Black Belt
I think for a younger person heading into a job market in which they have little experience, any major accomplishment could help distinguish them from the competition and land them an interview. In this context, it could be very useful. Similarly for someone applying to college; at the very least either accomplishment is a good indication that the person can set a goal for themselves and then work to achieve it over time.
It would also be useful to list either if they had relevance to the position you're applying for, and if you can elucidate that connection in a short sentence or two. For example, for a position that involved teaching field technicians how to use a particular product, I included my martial arts black belt in my resume indicating the number of years I had taught others in that context. It helped get me a phone interview, where we went into more detail about the type of teaching and how to reach different types of learners. I didn't end up getting the job, but that was partially because they couldn't offer me close to what I was already earning at the time.
If the martial arts black belt or the eagle scout badge is unrelated to the job you're applying for, then putting it on the resume is at best a talking point later, more likely to be considered irrelevant, and at worst it's a put-off for someone who may have had a bad experience or a misconception of what was involved in the process.
It would also be useful to list either if they had relevance to the position you're applying for, and if you can elucidate that connection in a short sentence or two. For example, for a position that involved teaching field technicians how to use a particular product, I included my martial arts black belt in my resume indicating the number of years I had taught others in that context. It helped get me a phone interview, where we went into more detail about the type of teaching and how to reach different types of learners. I didn't end up getting the job, but that was partially because they couldn't offer me close to what I was already earning at the time.
If the martial arts black belt or the eagle scout badge is unrelated to the job you're applying for, then putting it on the resume is at best a talking point later, more likely to be considered irrelevant, and at worst it's a put-off for someone who may have had a bad experience or a misconception of what was involved in the process.