“a striking of 40% of those with schizophrenia or schizoaffective disorder are left-handed.”
Webb and his colleagues studied 107 individuals from a public outpatient psychiatric clinic seeking treatment in an urban, low-income community. The research team determined the frequency of left-handedness within the group of patients identified with different types of mental disorders.
They have previously linked left-handedness with all sorts of neurologically unusual characteristics, not just illness. The hypothesis that I read was that left-handedness is associated with a general sort of “unusualness” factor in the brain. So it can be good thing, as well.
I’m right handed, but I taugh myself to write and draw with my left hand when I was young.
One of my delusions is that my mean voice Mia is left-handed. Before I got medicines that worked properly, I’d use my left hand as the dominant one if I felt she was taking over.
I am ambidextrous as well. I write and eat with my right hand, while I play(ed) tennis and wash dishes with my left hand. I played soccer with my left foot, but hit soft balls with my right hand back. I can do all of these things with either hand, but I fair better at all of them when using my natural hand.