DSM-IV
schizophrenia has very high diagnostic stability, with 80–90% of individuals
receiving an initial diagnosis of schizophrenia retaining
that diagnosis at 1–10 years (Haahr et al., 2008; Bromet et al.,
2011). Therefore, the core of the DSM-IV diagnostic criteria for
schizophrenia will be retained in DSM-5, with modest changes proposed
principally for the purpose of simplicity and incorporation of
new information about the nature of the disorder accumulated
over the past two decades (Tandon and Carpenter, 2012).