Browsing by Author "Roodt, Gert"

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    General performance factors and group differences in assessment center ratings
    (Emerald, 2017) Buckett, Anne; Becker, Jurgen R.; Roodt, Gert
    PURPOSE – The purpose of this paper is to establish the extent of general performance factors (GPF) in assessment center (AC) exercises and dimensions. The study further aims to determine if larger GPF contributes to larger ethnic group differences across exercises and dimensions that are more cognitively loaded in an emerging market context. DESIGN/METHODOLOGY/APPROACH – The authors analyzed data across three independent AC samples (Sample 1: N = 172; Sample 2: N = 281; Sample 3: N = 428). The Schmid-Leiman solution was used to determine the extent of GPF in AC exercises and dimensions. An independent samples t-test and Cohen’s d was used to determine the size of ethnic group differences across exercises and dimensions. FINDINGS – The results indicate that GPF is consistently large for the in-basket exercise. Furthermore, dimensions that are more cognitively loaded, such as problem solving, strategic thinking, and business acumen, seem to produce the largest ethnic group differences. Overall, the research indicates that larger GPF is associated with larger ethnic group differences in relation to specific AC dimensions and exercises. ORIGINALITY/VALUE – The authors add to the literature by investigating the prevalence of a GPF in AC ratings across AC exercises and dimensions. A novel contribution of the research attempts to link the prevalence of a GPF in AC ratings to group membership in South Africa. The study offers an alternative statistical analysis procedure to examine GPF in AC ratings.
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    The impact of item parceling ratios and strategies on the internal structure of assessment center ratings: A study using confirmatory factor analysis.
    (APA PsycNet, 2021) Becker, Jürgen Reiner; Buckett, Anne; Roodt, Gert
    The aim of the present study was to investigate whether using item parcels instead of single indicators would increase support for the factorial validity of assessment center (AC) ratings in factor analytic applications. Factor analytic analyses of AC ratings are often plagued by poor model fit as well as admissibility and termination problems. In the present study, three purposive item parceling strategies, in conjunction with three parceling approaches (specifying different ratios of indicators to dimensions), were investigated in relation to five confirmatory factor analysis specifications of AC ratings across two AC samples (Sample 1: N = 244; Sample 2: N = 320). The findings were equivocal across the two samples. Nonetheless, a three-parcel approach using a factorial allocation strategy performed better that a one-parcel approach (akin to the postexercise dimension rating). (PsycInfo Database Record (c) 2021 APA, all rights reserved)