Video shows what porpoise means. A small cetacean of the family Phocoenidae, related to whales and dolphins.. Any small dolphin.. porpoise synonyms: mereswin...
You will find 10 distinct types of personality disorders listed in the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition, (DSM-V). The different personality disorders are put into one of three clusters based on similar characteristics assigned to each cluster:
1 An early form of personality type theory was the Four Temperaments system of Galen, based on the four humours model of Hippocrates; an extended Five Temperaments system based on the classical theory was published in 1958. One study suggests that people with Type A personalities are more likely to develop personality disorders whereas Type B personalities are more likely to become alcoholics. 2  Developmental psychologist Jerome Kagan is a prominent advocate of type theory.