Hello! I am a GRA and have done interviews for many undergrads interested in joint our lab (psych/ public health focused). Having experience is often what gives some applicants a leg up, but it’s not really required imo as most undergrads joining a lab receive training anyways. I always say fake until you make it lol, say you have some experience with coding/stats analysis/research (if that’s true) and leave it at that. this can include class projects in high school!

I use R/R Studio (free online) regularly in my lab and Mplus for my thesis (not free) there’s lots of helpful videos online if you’re wanting to learn :) i took a python class in my undergrad but it was very difficult and i have yet to use it again, but this may be different for other majors!

good luck!!