Richard Lynn in his Dysgenics: Genetic Deterioration in Modern Populations (1996) identified three main concerns: deterioration in health, in intelligence, and in conscientiousness.
Richard Lynn 博士在Dysgenics：遺傳惡化在現代人群（1996）確定了三個主要的擔憂：人類族群中健康，智力以及責任心的喪失。