Abnormal Psychology MCQs

We know that a distinction is made between positive and negative symptoms of schizophrenia. What is the difference between these symptoms?

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A. Negative symptoms indicate the presence of something normal, and positive symptoms indicate the absence of something usual.
B. Positive symptoms indicate the presence of some thing normal, the absence of something usual.
C. Negative symptoms indicate the presence of something unusual, and positive symptoms indicate the absence of something normal.
D. Positive symptoms indicate the presence of something unusual, and negative symptoms indicate the absence of something normal.

Which are true of the diathesis-stress model of mental illness?Please identify all correct answers. 1: When an enduring vulnerability factor in a person is coupled with a recent stressor, it results in psychological disorder. 2: Only one of the diathesis or stressor needs to be present for symptoms of the psychological disorder to occur. 3: Both the diathesis and the stressor must be present to lead the symptoms of the psychological disorder. 4: Diathesis and stressors have specific definitions.

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A. 1 & 4
B. 1 & 3
C. 2 & 3
D. 2 & 4