Francis Galton in the context of "Collective intelligence"

Nature versus nurture is a long-standing debate in biology and society about the relative influence on human beings of their genetic inheritance or biology (nature) and the environmental conditions of their development (nurture). Nature is what people think of as pre-wiring and is influenced by genetic inheritance and other biological factors. Nurture is generally taken as the influence of external factors after conception e.g. the product of exposure, experience and learning on an individual.

The phrase in its modern sense was popularized by the Victorian polymath Francis Galton, the modern founder of eugenics and behavioral genetics when he was discussing the influence of heredity and environment on social advancement. Galton was influenced by On the Origin of Species written by his half-cousin, the evolutionary biologist Charles Darwin. The complementary combination of the two concepts is an ancient concept (Ancient Greek: ἁπό φύσεως καὶ εὐτροφίας).

Behavioural genetics, also referred to as behaviour genetics, is a field of scientific research that uses genetic methods to investigate the nature and origins of individual differences in behaviour. While the name "behavioural genetics" connotes a focus on genetic influences, the field broadly investigates the extent to which genetic and environmental factors influence individual differences, and the development of research designs that can remove the confounding of genes and environment.

Behavioural genetics was founded as a scientific discipline by Francis Galton in the late 19th century, only to be discredited through association with eugenics movements before and during World War II. In the latter half of the 20th century, the field saw renewed prominence with research on inheritance of behaviour and mental illness in humans (typically using twin and family studies), as well as research on genetically informative model organisms through selective breeding and crosses. In the late 20th and early 21st centuries, technological advances in molecular genetics made it possible to measure and modify the genome directly. This led to major advances in model organism research (e.g., knockout mice) and in human studies (e.g., genome-wide association studies), leading to new scientific discoveries.

Cognitive tests are assessments of the cognitive capabilities of humans and other animals. Tests administered to humans include various forms of IQ tests; those administered to animals include the mirror test (a test of visual self-awareness) and the T maze test (which tests learning ability). Such testing is used in psychology and psychometrics, as well as other fields studying human and animal intelligence.

Modern cognitive tests originated through the work of James McKeen Cattell who coined the term "mental tests". They followed Francis Galton's development of physical and physiological tests. For example, Galton measured strength of grip and height and weight. He established an "Anthropometric Laboratory" in the 1880s where patrons paid to have physical and physiological attributes measured. Galton's measurements had an enormous influence on psychology. Cattell continued the measurement approach with simple measurements of perception. Cattell's tests were eventually abandoned in favor of the battery test approach developed by Alfred Binet.

Height discrimination is prejudice or discrimination against individuals based on height. In principle, it refers to the discriminatory treatment against individuals whose height is not within the normal acceptable range of height in a population. Various studies have shown it to be a cause of bullying, commonly manifested as unconscious microaggressions.

Modern Western height discrimination originated in 19th century eugenic, Social Darwinist, and white supremacist movements, beginning with eugenicist Sir Francis Galton's observation of the correlation of human height between parents and offspring. These movements promulgated pseudoscientific beliefs about the superiority of larger male stature, most grotesquely embodied by the Nazi height ideals within the social construct of the Aryan master race.

The Adelphi Genetics Forum is a non-profit learned society based in the United Kingdom. Its aims are "to promote the public understanding of human heredity and to facilitate informed debate about the ethical issues raised by advances in reproductive technology."

It was founded by Sybil Gotto in 1907 as the Eugenics Education Society, with the aim of promoting the research and understanding of eugenics. Members came predominately from the professional class and included eminent scientists such as Francis Galton. The Society engaged in advocacy and research to further their eugenic goals, and members participated in activities such as lobbying Parliament, organizing lectures, and producing propaganda. It became the Eugenics Society in 1924 (often referred to as the British Eugenics Society to distinguish it from others). From 1909 to 1968 it published The Eugenics Review, a scientific journal dedicated to eugenics. Membership reached its peak during the 1930s.