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Bill Smith has maintained the delusion that his father is still alive despite having witnessed his death. He has only experienced this psychotic symptom while severely depressed. Given this information, which of the following appears to represent the best diagnosis for this man?

Requires excessive admiration:

Lacks empathy: is unwilling to recognize or identify with the feelings and needs of others:

Which of the following is not a negative psychotic symptom?  

Assume someone has an adult identical twin sibling who was diagnosed with schizophrenia by age 20.  What is your estimate of the risk that this individual will as well be diagnosed with schizophrenia? 

Transient, stress-related paranoid ideation or severe dissociative symptoms:

Displays rapidly shifting and shallow expression of emotions:

Is reluctant to delegate tasks or to work with others unless they submit to exactly his or her way of doing things:

Impulsivity or failure to plan ahead:

Psychosurgery has been used sparingly to treat which one of the anxiety disorders?