Wahyu Widhiarso

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The development of assessment instruments in psychology has the central goal of assessing the general construct of interest, which is assumed to be a single construct. Such a measure is termed a unidimensional measure. The dimension of the measure is important for interpreting the obtained score. Unidimensional measures require only simple interpretation,(More)
Many researchers have assumed that different methods could be substituted to measure the same attributes in assessment. Various models have been developed to accommodate the amount of variance attributable to the methods but these models application in empirical research is rare. The present study applied one of those models to examine whether method(More)
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