I use some very scary ones to stain my samples – they can cause blindness and cancer and all sorts of nasty things so I have to be really, really careful.
I don’t use any chemicals in my work as I am mostly interested in finding out about how athletes think and feel. Some psychologists do study or use chemicals though. Some psychological problems are caused by a chemical imbalance in the brain – so psychiatrists (who are a mixture of a doctor and a psychologist) can prescribe drugs/chemicals to help people with some types of psychological problems.
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