This study evaluated the five-factor measurement model of the abbreviated Multidimensional
Observation Scale for Elderly Subjects (MOSES), originally proposed by Pruchno, Kleban, and
Resch in 1988. Modifications of the five-factor model were examined and evaluated with regard
to their practical significance. A confirmatory second-order factor analysis was performed to
examine whether the correlations among the first-order factors were adequately accounted for
by a global dysfunction factor. Findings indicated that the proposed measurement model was
replicated adequately. Although post hoc modifications resulted in significant improvements in
overall model fit, the minor parameters had only a trivial influence on the major parameters of
the baseline model. Results from the second-order factor analysis showed that a global dysfunc
tion factor accounted adequately for the intercorrelations among the first-order factors.
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