The purpose of the present study was to investigate the psychometric charac
teristics of the Job Responsibilities Scale (JRS). This article illustrates
how factor analysis, cluster analysis, multidimensional scaling, and item
response theory may be viewed as related data analyses, each capable of she
dding insight into the structural dynamics of items designed to function as
a measurement scale. Results of the analyses show that (a) the JRS measure
s a continuum of increasingly greater job responsibility tasks, and (b) eac
h method of statistical analysis provides unique, yet complementary, eviden
ce in support of the JRS continuum.