mental defectiveness वाक्य

In the 1910s, Rockefeller created the Bureau for Social Hygiene, which conducted experiments on female prisoners, with the state's consent and financial support, to determine the roots of their criminality and " mental defectiveness ."
In a petition, she wrote that mentally defective children were " a menace to society and an enormous cost to the state . . . science is proving that mental defectiveness is a transmittable hereditary condition . " She wrote to Minister of Agriculture and Health, George Hoadley that two female " feeble-minded " mental patients already bred several offspring.