For example the rank ordering of individuals could

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Unformatted text preview: ver time. Rank-order stability is theoretically and statistically distinct from normative stability. For example, the rank ordering of individuals could change substantially over time but without any aggregate increases or decreases (e.g., if the number of people who decreased offset the number of people who increased). Similarly, a population could increase substantially on a trait, but the rank ordering of individuals would be maintained if everyone increased by the same amount. Changes in rank ordering result from maturational or experiential factors that differentially affect people, as 620 Robins et al. well as from measurement error. Rank-order stability is commonly assessed by the correlation between personality scores across two time points. Structural stability refers to the degree of continuity in the intercorrelations among traits over time. Structural equation modeling can be used to assess the degree to which the intercorrelations among personality dimensions are invariant over time (Mortimer et al., 1982; see Panter, Tanaka, & Hoyle, 1994, for a general discussion of methodological approaches to comparing personality structure across time, measures, and data source). Ipsative stability refers to the degree to which the relative ordering of traits within an individual stays the same over time. Of the four types of stability, only ipsative stability characterizes changes that occur at the level of the individual. Ipsative stability can be assessed by several different indices of profile similarity, which quantify the degree to which two profiles differ in their elevation, scatter, and shape (Cronbach & Gleser, 1953). Normative Change Although no studies have used a direct measure of the Big Five to chart normative, or mean-level, changes in personality during the college years, a number of studies have tracked changes on other personality dimensions from adolescence through young adulthood. Many of these studies focused on dimensions broadly related to Openness to Experience. For example, Plant (1965)...
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This note was uploaded on 12/02/2010 for the course PSYCH PSY BEH P2 taught by Professor Susanturkcharles during the Fall '10 term at UC Irvine.

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