Factor Analytic Modeling of within Person Variation in Score Profiles.

Davison, Mark L.; Kim, Se-Kang; Close, Catherine

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Title: Factor Analytic Modeling of within Person Variation in Score Profiles

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Title:	Factor Analytic Modeling of within Person Variation in Score Profiles
Authors:	Davison, Mark L.; Kim, Se-Kang; Close, Catherine
Descriptors:	Vocational Interests; Interest Inventories; Profiles; Scores; Factor Analysis; Evaluation Methods; Research Methodology; Individual Characteristics; Test Items; Equations (Mathematics); Goodness of Fit; Personality Traits
Source:	Multivariate Behavioral Research, v44 n5 p668-687 2009
More Info: Help Peer Reviewed:	Yes
Publisher:	Psychology Press. Available from: Taylor & Francis, Ltd. 325 Chestnut Street Suite 800, Philadelphia, PA 19106. Tel: 800-354-1420; Fax: 215-625-2940; Web site: http://www.tandf.co.uk/journals
Publication Date:	2009-00-00
Pages:	20
Pub Types:	Journal Articles; Reports - Evaluative
Abstract:	A profile is a vector of scores for one examinee. The mean score in the vector can be interpreted as a measure of overall profile height, the variance can be interpreted as a measure of within person variation, and the ipsatized vector of score deviations about the mean can be said to describe the pattern in the score profile. A within person pattern interpretation of orthogonal factor loadings is developed. A statistic is proposed to index the amount of within person variation accounted for by an orthogonal factor. The statistic can be used to determine whether a factor warrants a within person pattern interpretation. A factor model with a random coefficient intercept is proposed for the study of within person score patterns accounting for within person variation. Two examples, one involving items from the "Life Orientation Test" and the other involving subscales of the "Strong Vocational Interest Inventory", illustrate application of the factor model with an intercept, the within person variation statistic, and the profile pattern interpretation of factor loadings. With empirical support from the examples, it is conjectured that theoretically important traits often manifest themselves through within person score patterns. (Contains 2 tables and 3 figures.)
Abstractor:	As Provided
Reference Count:	24

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Record Type:	Journal
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ISBN:	N/A
ISSN:	ISSN-0027-3171
Audiences:	N/A
Languages:	English
Education Level:	N/A
Direct Link:	http://www.informaworld.com/openurl?genre=article&id=doi:10.1080/00273170903187665

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