Eugenics as a Factor in the Prevention of Mental Disease

The book opens with a stark portrait of early‑twentieth‑century America, where mental illness and related conditions were swelling hospital populations and exacting a massive economic toll. Drawing on census data and the author’s own work with the New York State Hospital Commission, it outlines how rates of institutionalization more than doubled between 1890 and 1920, and why traditional treatment was proving insufficient for most patients. The author frames this surge as both a public‑health crisis and a social burden, urging readers to consider the broader impact on families, taxpayers, and community welfare.

From this urgent backdrop, the author turns to a statistical exploration of heredity, arguing that inherited “neuropathic” traits follow Mendelian patterns and influence the spectrum of intelligence and temperament. He proposes that careful measurement and early intervention could become a cornerstone of mental‑hygiene efforts, complementing education, legislation, and cooperation among medical and social agencies. The early sections set the stage for a data‑driven discussion on how preventive strategies might alleviate the growing strain of mental disease.