The purpose of this study was to investigate the underlying factor structure of the 30-item Emotional Intensity Scale (EIS) and to construct a reduced EIS (EIS-R). The psychometric characteristics of the scales were examined from three different samples: 204 employees of the University of Antwerp, a subset of 106 of the first sample who cooperated in a retest, and 510 men and women representative of the Belgian population. The original EIS does not seem to possess an adequate factor structure. Confirmatory factor analysis on a reduced scale of 17 items indicates that two factors underlie the EIS-R: a positive and a negative emotions factor. Furthermore, scores on the EIS-R were shown to have adequate reliability and validity.
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