Browsing by Author "Henning, Roline"

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    The internal structure of the unit performance construct as measured by the performance index (PI)1
    (AOSIS, 2004) Henning, Roline; Theron, Callie; Spangenberg, Hermann
    The objective of this study was to investigate the internal structure of the Performance Index in order to establish the interrelationships between the eight unit performance latent variables. The present study forms part of a larger study aimed at validating the Leadership Behaviour Inventory (LBI) (Spangenberg & Theron, 2002b) against work unit performance. The validation sample, after imputation of missing values, consisted of 273 cases with observations on all 56 items. Item analysis and dimensionality analysis was performed on each of the sub-scales using SPSS-windows. Thereafter, confirmatory factor analysis was performed on the reduced data set using LISREL. The results indicated satisfactory factor loadings on the measurement model. Acceptable model fit was achieved. Subsequently, the structural model was tested using LISREL. The results provided statistics of good fit. Only four hypotheses failed to be corroborated in this study. The results are discussed and suggestions for further research are made.
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    An investigation into the internal structure of the unit performance construct as measured by the performance index (PI)
    (Stellenbosch : Stellenbosch University, 2002-12) Henning, Roline; Theron, C. C.; Stellenbosch University. Faculty of Arts and Social Sciences. Dept. of Psychology.
    ENGLISH ABSTRACT: The responsibility for the performance of any organisational unit ultimately lies with the leadership of the unit. Given this perceived pivotal role of leadership in work unit performance, the ultimate objective is to capture the nature of the presumed relationship between leadership and unit performance in a comprehensive structural model. To validate such a leadership model, however, requires an explanation of the manner in which the unit performance dimensions affect each other. Spangenberg and Theron (2002b) developed a generic, standardized unit performance measure (PI) that encompasses all the unit performance dimensions for which the unit leader could be held responsible. The objective of this paper is to investigate the internal structure of the PI in order to establish the inter-relationships between the eight unit performance latent variables. The PI consists of 56 questions covering eight dimensions. The validation sample consisted of 304 completed PI questionnaires. However, after imputation 273 cases with observations on all 56 items remained in the validation sample. Item analysis and dimensionality analysis was performed on each of the sub-scales using SPSS. Thereafter, confirmatory factor analysis was performed on the reduced data set using LISREL. The results indicated satisfactory factor loadings on the measurement model. Acceptable model fit was achieved for the measurement model. Subsequently, the structural model was tested using LISREL. The results provided statistics of good fit. Only four hypotheses failed to be corroborated in this study. Conclusions were drawn from the results obtained and suggestions for further research are made.