- (D) Bipolar disorder has been linked to an excess of acetylcholine receptors. The manic phase
responds well to lithium, and the depressed phase responds well to antidepressant medications. In
addition, much research suggests that bipolar disorder runs in families. Though we may be
predisposed to develop certain phobias more easily than others, phobias are well explained by and
treated from other perspectives, particularly the behaviorist perspective. The existence of
dissociative identity disorder is hotly debated; those who believe in its existence generally posit a
traumatic event in childhood as a cause. Conversion disorders have become increasingly
uncommon in the United States; such a change argues against a genetic cause as the gene pool
remains relatively stable. Further, a conversion disorder involves a physical complaint in the
absence of a physical symptom and is therefore unlikely to have a biological cause.
marvins-underground-k-12
(Marvins-Underground-K-12)
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