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So today, we're going to be going through problem number nine in chapter 15, psychological disorders.
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And we're first going to talk a little bit about how schizophrenic disorders used to be divided in terms of two distinct categories.
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I'm going to write that down here.
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So they were once divided.
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So different types of schizophrenic disorders were once divided by just two categories.
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And one category was predominance of positive symptoms.
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And the next category was predominance of positive symptoms.
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Of negative symptoms.
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So let's first kind of parse through what these mean exactly.
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So we'll start out with positive symptoms.
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So a positive symptom of schizophrenia is any behavior that is in excess of how it should be normally or also just a behavior that is odd that you don't see in normal human behavior...