Depends on what career you choose. What are you planning for your graduate course?
Doing psych will allow you to apply biology to psychological behaviour (useful if you want to do further study in psych). Doing maths will allow you to apply maths (and physics) to biology and chemistry (VERY useful if you want to do further study in biology and chemistry).
This. Im planning to do further study in chem and bio... i dont want to major in psychology- just an interest.
Hmmm now im really indecisive, had psych in mind but not im leaning towards maths :S hmmmmmmmm
Do maths. It is far less work and will benifit your further studies in the physical sciences. All you do in Calc 1/2 is problems...nothing else.
Psych will require you to make notes...do pre reading...write essays...do questions...the list just goes on. :p
Edit: (Slumdawg is gonna kill me for advocating maths over psych haha)
First year psych, you only write one essay as part of your assessment. Then you need to do 3 hours of compulsory research participation, attend the epically boring tutes and then the final 60% exam.
Piss easy compared to an 80% maths exam. Though it's Calc 1/2 so it's still easy, though not piss easy.