One of the Factors Leading to Major Changes in Psychiatry

One of the factors leading to major changes in psychiatry during the past quarter-century was

A) the consensus on diagnostic criteria and the publication of the Diagnostic and Statistical Manual, which facilitated the reliable diagnosis of mental disorders
B) the minimal use of pharmacological therapy in the treatment of psychosis, bipolar affective disorder and depression
C) the discontinuation of cognitive-behavioural therapy in patients with neurosis
D) the evolution of an institutional psychiatric model of care
E) psychosocial interventions were no longer part of standard practice