Louis Leon Thurstone (29 May 1887-30 September 1955) was a U.S. 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. Wikipedia
Intelligence is therefore the capacity for abstraction, which is an inhibitory process (Thurstone, 1924/1973 p. 159). www.indiana.edu/~intell/lthurstone.shtml
Renaissance man turned psychometrician -- this is perhaps the best way to encapsulate Thurstone's career. www.psych.usyd.edu.au/difference5/scholars/thurstone.html
The definitive Wikipedia entry for Louis Leon Thurstone. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Louis_Leon_Thurstone