Glossary F

- Francis Galton (1822-1911) : Francis Galton one of the great scientist who was keenly interested in the measurement of individual differences, as influenced by his cousin, Charles Darwin. Galton was convinced that intellectual ability is inherited, and therefore recommended Eugenics, or the selective breeding of humans. He was the first to attempt to systematically measure intelligence, to use a questionnaire to gather data, to use a word-association test, to study mental imagery, to define and use the concepts of correlation and median, and to systematically study twins.

- Franciscus Cornelius Donders (1818-1889) : Franciscus Cornelius Donders used reaction time to measure the time it took to perform various mental acts.

- François Magendie (1783 - 1855) : François Magendie discovered, in modern times, the distinction between sensory and motor nerves.

Frangible means capable of being broken; breakable; fragile.

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Frankpledge is defined as an ancient system whereby members of a tithing, an association of ten (10) families, were bound together by a mutual pledge to keep the peace. Every male over age 12 was part of the system.

Franz Alexander established the first formal gathering of individuals interested in studying the influences of the mind on health together with Helen Flanders Dunbar.

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- Franz Clemens Brentano (1838 - 1917) : Franz Clemens Brentano believed that introspection should be used to understand the functions of the mind rather than its elements. Brentano's position came to be called Act Psychology.

- Franz Joseph Gall (1758–1828) : Franz Gall refers to Austrian anatomist who postulated that mental faculties were innate and related to the topical structures of the brain. Gall believed that the strengths of mental faculties varied from person to person and that they could be determined by examining the bumps and depressions on a person's skull. Such an examination came to be called Phrenology. Please see also Phrenology.