The 'social' in psychiatry and mental health: quantification, mental illness and society in international scientific networks (1920s-1950s).

The post-World War II international mental health movement placed significant emphasis on the concept of the 'social environment', a true paradigm shift in thinking about the causes of mental illness. Rather than focusing on individual risk factors, experts and policy-makers began to consider the interplay between social context and mental health and illness. Also, during this period, quantification gained prominence within the expanding field of Western psychiatry. Eventually, the concept of the 'social' became fragmented into quantifiable social determinants that could be correlated with mental illness and subjected to systematic neutralization. This trajectory paved the way for the prevailing biomedical psychiatric epidemiology. This broader inquiry challenges us to redefine our understanding of the 'social' in the context of mental health research and practice.