I guess, but no more than being a pleasant person to interact with at your interview. It can be a huge negative if you come in with the attitude of having any sort of advanced knowledge from other applicants or residents. It might make you stick in the committee's head a tiny bit if you have something genuinely interesting to share about the experience that comes up organically, but much less than say having won some sort of dressage championship. It'd probably leave a bigger impression with other specialties and my goodness, you are so, so far out from making a residency decision with two full years of VERY basic science followed by another year of mostly not psychiatry before you might have enough info to make a basic informed decision about your career in medicine. It's okay to be vaguely interested in psychiatry, but don't commit even mentally to it now. Psychiatry is not the same work as being a LPCC. Day to day they overlap in occasional areas, but so do psychiatry and urology.