If by "internship" you mean some kind of formal clinical experience with psych populations..the answer is yes. However, you will not be qualified to do much more than very basic things at this point. You wont be doing in therapy, testing, or diagnosis. Maybe some education groups though. Common clinical experiences during the undegrad years include working as a psychiatric tech (kinda like a nurses aid) in psych hopsital or psychiatric unit of a med hospital, working in a crisis/battrered women/or homless shelter, volunteering at crisis and suicide hotlines, etc. Certain research volunteer experiences may also get you exposure to psychiatric disorders, depnding on the nature of thr research and your role of course. I did some very basic testing (giving the STAI, NEO-PI, trail making, tower of hanoi) as an undergrad with normal subjects...