In validating a selection test (x) as a predictor of y,
an incomplete xy data set must often be dealt with. A
well-known correction formula is available for estimating
the xy correlation in some total group using the
Six methods of equating The Test of English as a
Foreign Language (TOEFL) test scores were evaluated
in terms of scale stability. True score item response
theory (IRT) equating based on "Fixed b’s" scaling,
the current ...
Assuming bivariate normality with correlation r, dichotomizing
one variable at the mean results in the reduction
in variance accounted for to .647r²; and dichotomizing
both at the mean, to .405r². These losses, in
This review summarizes and evaluates the use of
multidimensional scaling in vocational psychology.
Multidimensional scaling applications are found in two
primary areas: vocational interests and occupational
Cognitive psychology has used multidimensional
scaling (and related procedures) in a wide variety of
ways. This paper examines some straightforward applications,
and also some applications where the explanation
of the ...