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G. Frederic (Fritz) Kuder (1903–2000) was a counseling psychologist and psychometrician. He was a founding member and the second president of the Division of Counseling Psychology of the American Psychological Association ; cofounder of Personnel Psychology , and founder and editor of Educational and Psychological Measurement .
Often discussed in tandem with KR-20, is Kuder–Richardson Formula 21 (KR-21). [4] KR-21 is a simplified version of KR-20, which can be used when the difficulty of all items on the test are known to be equal. Like KR-20, KR-21 was first set forth as the twenty-first formula discussed in Kuder and Richardson's 1937 paper.
The test was developed in 1927 by psychologist Edward Kellog Strong Jr. to help people exiting the military find suitable jobs. [8] It was revised later by Jo-Ida Hansen and David P. Campbell. The modern version of 2004 is based on the Holland Codes typology of psychologist John L. Holland. [8]
A preference test is an experiment in which animals are allowed free access to multiple environments which differ in one or more ways. Various aspects of the animal's behaviour can be measured with respect to the alternative environments, such as latency and frequency of entry, duration of time spent, range of activities observed, or relative ...
Kuder–Richardson Formula 20; Kuiper's test; ... Preference regression (in marketing) ... Student's t-test for Gaussian scale mixture distributions ...
Choice modelling is used in both revealed preference (RP) and stated preference (SP) studies. RP studies use the choices made already by individuals to estimate the value they ascribe to items - they "reveal their preferences - and hence values (utilities) – by their choices".