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paranoid personality disorder

in DSM–IV–TR, a personality disorder characterized by (a) pervasive, unwarranted suspiciousness and distrust (e.g., expectation of trickery or harm, overconcern with hidden motives and meanings); (b) hypersensitivity (e.g., being easily slighted or offended, readiness to counterattack); and (c) restricted affectivity (e.g., emotional coldness, no true sense of humor). The diagnosis has been retained in DSM–5.

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Psychology term of the day

May 9th 2024

node of Ranvier

node of Ranvier

any of successive regularly spaced gaps in the myelin sheath surrounding an axon. The gaps permit the exchange of ions across the plasma membrane at those points, allowing the nerve impulse to leap from one node to the next in so-called saltatory conduction along the axon. [Louis A. Ranvier (1835–1922), French pathologist]