Assertion: symptom | /r/CapableOf | begin in early adulthood
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Source sentences:
text: A narcissist, by definition, is someone with a pervasive pattern of grandiosity, need for admiration, and lack of empathy, whose symptoms begin in early adulthood,” says Cory Newman, PhD, a professor of psychology at the Perelman School of Medicine at the University of Pennsylvania who has written on narcissistic personality disorder.