ANSWER: Description comes directly from the textbook.
The disorders that belong to this section all have one feature in common: psychotic symptoms, that is, delusions, hallucinations, grossly disorganized or abnormal motor behavior, and/or negative symptoms. The disorders include schizotypal personality disorder (which is listed again, and explained more comprehensively, in the category of personality disorders in the DSM-5), delusional disorder, brief psychotic disorder, schizophreniform disorder, schizophrenia, schizoaffective disorder, substance/medication-induced psychotic disorders, psychotic disorders due to another medical condition, and catatonic disorders.