Better babies contests were competitions held in state fairs throughout the US during the early twentieth century in which babies between the ages of 6 and 48 months were judged for their health. In 1908, social activist Mary de Garmo established and held the first better babies contest at the Louisiana State Fair in Shreveport, Louisiana. The contests, mirroring theories established in the US’s eugenics movement of the twentieth century, aimed to establish standards for judging infant health. Nurses and physicians judged infants participating in the contest on mental health, physical health, and physical appearance. In 1913, the Woman’s Home Companion (WHC) magazine cosponsored de Garmo’s better babies contests and introduced the competition to state fairs throughout the US. Better babies contests helped promote routine health assessments of children by medical professionals.

A vasectomy is a surgery that works to inhibit reproduction by interrupting the passage of sperm through the vas deferens, a tube in the male reproductive system. The procedure is a method of inhibiting an individual’s ability to cause pregnancy through sexual intercourse without altering the other functions of the penis and testes. In the US, into the early 1900s, proponents of eugenics, the belief that human populations can be made better by selecting for so-called desirable traits, used the procedure to forcibly sterilize people whom they deemed undesirable. Despite its early associations with eugenics, physicians’ use of vasectomy eventually transitioned into an option for elective contraception. Even with the various shifts in motivation for performing vasectomies, as of 2023, patients have the choice to undergo a sterilization procedure if they want to restrict their own ability to have children.

Lewis Madison Terman was a researcher and university professor who studied educational psychology and advocated for eugenics in the United States during the early twentieth century. The US eugenics movement, which Terman supported, was a collection of scientific research and social programs that aimed to improve human populations through control over human reproduction. One area many eugenicists studied was human intelligence as a means of determining how “desirable” a person may be. During the 1910s, while working at Stanford University in Palo Alto, California, Terman helped devise the Stanford-Binet scale for intelligence testing. As of 2024, the Stanford-Binet test is one of the main methods for providing individual intelligence quotient, or IQ, scores. In addition to the Stanford-Binet scale, Terman promoted the idea that individuals had fixed and inherited capacities for intelligence. Through both his development of a widely used method for measuring human intelligence and his promotion of the idea of intelligence as hereditary, Terman supported widespread social efforts to control human reproduction in the US during the twentieth century.

In 1933, an act of the North Carolina legislature created the Eugenics Board of North Carolina, or EBNC, to oversee the practice of sterilization, which is the removal of an individual’s ability to reproduce, in the state. Beginning in the late nineteenth and early twentieth centuries, the US eugenics movement involved both state and non-governmental entities attempting to improve human populations through selective breeding, which included sterilization of those labeled as genetically inferior. In North Carolina, the EBNC headed the state government’s eugenics program and oversaw decisions related to the sterilization of poor and disabled people. By the time of the dissolution of the EBNC in the late 1970s, an estimated 7,600 people had undergone forced sterilization under the board’s approval. Some of them later received funds in the 2010s from the state government in one of the first programs to provide compensation to involuntarily sterilized individuals. The EBNC presided over the sterilizations of thousands of people in North Carolina, prompting one of the first attempts at eugenics reparations in the US.

Paul Bowman Popenoe was a researcher, writer, and social advocate who studied breeding in the United States during the twentieth century, first in plants and then in humans. Popenoe advocated for eugenic policies in California and beyond in the early twentieth century, and he introduced and promoted marriage counseling as a professional service in the US during the mid-twentieth century. The US eugenics movement, in which Popenoe participated, was a scientific and political project in which eugenicists attempted to improve human populations through selective breeding. Participants of the movement often advocated for the implementation of compulsory sterilization laws for certain “undesirable” populations. Though largely disavowed as of 2026, eugenics persisted well into the twentieth century. Through dozens of publications and a lifetime of public advocacy, Popenoe supported policies that led to the forced sterilization of thousands of people in California and popularized counseling as an intervention into people’s marriages and reproductive choices.