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Louis Leon Thurstone (May 29, 1887 – September 29, 1955) [1] was an American pioneer in the fields of psychometrics and psychophysics. He conceived the approach to measurement known as the law of comparative judgment , and is well known for his contributions to factor analysis .
A 2004 conference called Factor Analysis at 100 produced a book with two chapters that document the historical importance Thurstone's contributions to factor analysis. [10] [11] Thurstone's approach to factor analysis remains an important method in psychological research and it has since been used in numerous other fields of study. [12]
Thurstone, Howard Gardner, and Robert Sternberg also researched the structure of intelligence, and in analyzing their data, concluded that a single underlying factor was influencing the general intelligence of individuals.
Thurstonian models were introduced by Louis Leon Thurstone to describe the law of comparative judgment. [7] Prior to 1999, Thurstonian models were rarely used for modeling tasks involving more than 4 options because of the high-dimensional integration required to estimate parameters of the model.
In psychology and sociology, the Thurstone scale was the first formal technique to measure an attitude. It was developed by Louis Leon Thurstone in 1928, originally as a means of measuring attitudes towards religion. Today it is used to measure attitudes towards a wide variety of issues.
The initial development of common factor analysis with multiple factors was given by Louis Thurstone in two papers in the early 1930s, [42] [43] summarized in his 1935 book, The Vector of Mind. [44] Thurstone introduced several important factor analysis concepts, including communality, uniqueness, and rotation. [ 45 ]
Thelma and Louis moved to North Carolina in 1950, where Thelma accepted a position at the University of North Carolina as a professor in the Department of Education. Following the death of her husband in 1955, Thurstone took over as director of the L. L. Thurstone Psychometric Laboratory for two years.
Gardner's theory of multiple intelligences can be seen as both a departure from and a continuation of the 20th century's work on the subject of human intelligence. Other prominent psychologists whose contributions variously developed or expanded the field of study include Charles Spearman, Louis Thurstone, Edward Thorndike, and Robert Sternberg.