To become a psychologist you must go to university (I'm including professional schools here as well) and complete an undergraduate and a doctoral degree in psychology. Each university will have their own high school course requirements for entry into various faculties. Some psychology departments don't require any physical science courses at the high school level, but most require at least one science. Practically it depends on what kind of psychologist you want to be. The term psychologist is very vague and covers a surprisingly wide array of activities. Here are just a couple of examples: Neuropsychologists are wise to have a solid grounding in the physical sciences while a counselling psychologist may not use any hard science in their practice, it really depends on what direction you want to go within the discipline. Advice: contact an academic advisor at the school you want to attend and ask them what their requirements are.
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None.
It depends on the specialty (behavioral science, counseling, school psychologist, etc.)
it depends the best way to find out is to contact your physical doctor.
Chemicals can relate to physical science because we use different gases that need chemicals in them
The first thing you need to do see a physician. If there are no physical implications, then the physician may refer you to a psychologist, or psychiatrists.
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Science different fields need mathematics; including algebra; to verify different science theories and explain different science phenomena.
Depending on the job you were seeking, in the field of science, you would need to have a science degree. You can have an Associate of Science, a Bachelor of Science, or a Master in Science degree. These degrees each have numerous fields, and you would need to go for the degree that matches the job you want.
You don't have to be a genius to know this but a: Psychologist, Quantum Physicist, Geologist, Astro Physicist, And Mycologists need require some knowledge of science.
to become a psychologist you need to get a PhD