ok so you want to do and arts degree and have a psych major(psych for most people is just a major not a degree so you can do it within heaps of other degrees), there's a few things you can do.
BA - thats right you can do a plain old BA, but psych will have to be your second major as you need an arts major first up. means you'll have to plan everything well right from the start and wont have any spare units to fill up with random fun subs, and that's half of what a BA is for
BA(Psych) - pretty much the same as a BA, but you can have psych as your first major, meaning a lot of space for random fun units, BUT you need to maintain a D avg in psych units or you're dropped down to BA. thats important BA(psych) people get direct entry into honours while everyone else(except B.Psych kids) have to apply and compete for a limited number of spots(i think this is what ahen means about further education to register. B.Psych and BA(Psych) have the honours year integrated while everyone else has to do it after they finish their degree)
BA/B.Sc - gives you all the freedom of an arts degree and a science degree to put your psych major in. it is 5 years however and does include some perscribed units(ie 12 CP of junior maths, 24 Junior of Sci, that kind of thing). you'll get to do everything you want but honors entry will be hard and 5 years is a long time
B.Sc - you could just do a plain B.Sc. if you have a psych major that'll dominate your time in senior years anyway and you are allowed arts filler. so if you dont want an arts major this isnt too bad. has the same prescribed units as the sci part of BA/B.Sc
B.Psych - a B.Sc with the same D avg honours entry as BA(Psych)
B.LibStudies - If you're thinking of doing a language then this is another option. You have to do a sci major(psych), 24CP of a language and an arts major(which can be the lang). 4 years, so kind of in between palin BA or B.Sc and combined BA/B.Sc. Don't get direct honours entry.
now it may seem a bit wierd that i'm going on about honours so much but in psych honours is really important for future job prospects. you need honours to register as a psychologist, otherwise you just have a psych major, being a registered psychologist is obviously a lot better. even if you go into a field where registratino isnt needed having the hons is always a big boost.
you can tell that i have essays due this week when i'm procratinating like this ey.