Electrodermal activity : By Wolfram Boucsein Plenum Press, New York, 1992, 442 pages, $65 U.S.

Abstract

This study developed a shortened version of the Zuckerman-Kuhlman-Aluja Personality Questionnaire (ZKA-PQ/SF) and tests its psychometric properties using different samples. This brief version has only 80 items (four items per facet), in contrast with the 200 items (10 items per facet) of the long version. The validation sample was formed of 1416 volunteers (696 males and 720 females) with a mean age of 34.62 (SD: 14.06). The ZKA-PQ/SF has a robust five-factor structure, highly similar to the long questionnaire. The average factor congruence is quite high (0.98). The alpha reliability coefficients of four-item facets range between 0.64 and 0.86. Test-retest coefficients for a three-month period were 0.83, 0.84, 0.80, 0.78, and 0.82 for Neuroticism, Sensation Seeking, Extraversion, Activity and Aggressiveness, respectively. Controlling for item overlap, correlations between long and short forms ranged between 0.65 and 0.80. Regarding validity, the ZKA-PQ/SF showed adequate convergent and divergent validity with regard to the Revised NEO Personality Inventory shortened form (NEO-FFI-R). The ZKA-PQ/SF has good psychometric properties retaining the original 20 facets of the ZKA-PQ and, is therefore well suited for research purposes based on Zuckerman's Alternative Five-Factor model in those cases where the long version is inappropriate.