The item factor structure of the Personality Research Form

Helmes, Edward
Jackson, Douglas N.
1977
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The item factor structure of the Personality Research Form

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1977

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Multiscale personality inventories have rarely, if ever, demonstrated factor structure broadly consistent at the item level with scale keys. An item factor analysis of the 352 items of PRF-E was undertaken to evaluate the extent to which PRF items define separate and distinct factors corresponding to keyed scales. A matrix based on 352 items and 214 subjects drawn from 31 colleges was decomposed according to the Eckart-Young theorem, the factor loading matrix was formed, and then was rotated to an orthogonal target matrix of the 22 PRF-E scales. Inspection of the rotated matrix showed that only 2 of the 352 items failed to load in the keyed direction. The mean loading of items on their scale factor was .38; the mean loading of non-scale items was .09. This strong tendency for scale items to load more highly than non-scale items was also reflected in the majority of scale items being among the 16 highest loadings on each scale factor. For three scales, Dominance, Harmavoidance, and Order, the scale items were the 16 highest loaded items. The observed item factor structure of the PRF is interpreted as being attributable to the methods of construct definition and item selection used in the construction of the PRF.

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Applied Psychological Measurement, Volume 01, 1977

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Helmes, Edward & Jackson, Douglas N. (1977). The item factor structure of the Personality Research Form. Applied Psychological Measurement, 1, 185-194. doi:10.1177/014662167700100205

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Helmes, Edward; Jackson, Douglas N.. (1977). The item factor structure of the Personality Research Form. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/98488.

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