The maths in Psych is just stats, and the stats you do in first year is nothing, although i'm sure it picks up in later years. But if you do BPsych or BScience, you have to do maths units as well. I'm doing arts so I don't have to do these though
I'm doing first year psych at the moment. I love it, and am planning on majoring in it. And keep in mind you doin't need to do BPsych to major in it and do honours, so you don't necessarily need to get a really high UAI/ATAR