Leoni Van der Vaart

Dr. Leoni Van der Vaart

orcid

Research Focus & Metrics

Academic Career Length

14Years (2013-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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23 February 2023 in The Journal of Positive Psychology
Verified
Journal Article
Open access
Llewellyn Ellardus van ZylLlewellyn Ellardus van Zyl
Llewellyn Ellardus van Zyl
JGJaclyn Gaffaney
Jaclyn Gaffaney
LVLeoni Van der Vaart
Leoni Van der Vaart
BDBryan J. Dik
Bryan J. Dik
SDStewart Donaldson
Stewart Donaldson
The purpose of this systematic literature review was to explore the current critiques and criticisms of positive psychology and to provide a consolidated view of the main challenges facing the third wave of research. The review identified 32 records that posed 117 unique criticisms and critiques of various areas of the discipline. These could be grouped into 21 categories through conventional content analysis, culminating in six overarching themes or ‘broad criticisms/critiques’. The findings suggested that positive psychology (a) lacked proper theorizing and conceptual thinking, (b) was problematic as far as measurement and methodologies were concerned, (c) was seen as a pseudoscience that lacked evidence and had poor replication, (d) lacked novelty and self-isolated itself from mainstream psychology, (e) was a decontextualized neoliberalist ideology that caused harm, and (f) was a capitalistic venture. We briefly reflect on the findings and highlight the opportunities these criticisms and critiques present.

1 October 2024 in European Journal of Psychological Assessment
Verified
Journal Article
Closed access
Leon T. De BeerLeon T. De Beer
Leon T. De Beer
LVLeoni Van der Vaart
Leoni Van der Vaart
MEMaximiliano Escaffi-Schwarz
Maximiliano Escaffi-Schwarz
HWHans De Witte
Hans De Witte
WSWilmar B. Schaufeli
Wilmar B. Schaufeli
This study sought to investigate the measurement properties of a “gold standard” instrument for measuring burnout, the Maslach Burnout Inventory – General Survey (MBI-GS), with a systematic literature review and meta-analysis of studies that had as the primary aim its psychometric validation. The search spanned from January 1996 to December 2022 using the following databases: Web of Science, Scopus, PubMed, APA PsychINFO, ScienceDirect, and ProQuest Dissertations and Theses Global. Our search identified 35 eligible studies for inclusion in the systematic review. Of these, 17 were included in the meta-analysis. The meta-analysis of the original 16-item version studies supported a three-dimensional representation of burnout with modest internal consistencies. However, similar to the narrative findings, it also indicated the viability of a two-factor solution. Consequently, the structural validity of the MBI-GS remains unclear, and so does its cross-cultural validity. The criterion validity of the cynicism and personal efficacy scales also raised a few questions. Overall, the findings provided some support for the adequacy of the measurement properties of the MBI-GS as a research tool measuring exhaustion, cynicism, and professional efficacy. However, we also identified challenges and practices of which researchers should be cognisant and that they should consider in future burnout projects.

22 April 2016 in SA Journal of Industrial Psychology
Verified
Journal Article
Open access
PDF file
LCLynelle Coxen
Lynelle Coxen
LVLeoni Van der Vaart
Leoni Van der Vaart
MSMarius W. Stander
Marius W. Stander
Orientation: The orientation of this study was towards authentic leadership and its influence on workplace trust and organisational citizenship behaviour in the public health care sector.Research purpose: The aim of this study was to investigate the influence of authentic leadership on organisational citizenship behaviour, through workplace trust among public health care employees in South Africa. The objective was to determine whether authentic leadership affects organisational citizenship behaviour through workplace trust (conceptualised as trust in the organisation, immediate supervisor and co-workers).Motivation for the study: Employees in the public health care industry are currently being faced with a demanding work environment which includes a lack of trust in leadership. This necessitated the need to determine whether authentic leadership ultimately leads to extra-role behaviours via workplace trust in its three referents.Research design, approach and method: A quantitative cross-sectional survey design was used with employees the public health care sector in South Africa (N = 633). The Authentic Leadership Inventory, Workplace Trust Survey and Organisational Citizenship Behaviour Scale were administered to these participants.Main findings: The results indicated that authentic leadership has a significant influence on trust in all three referents, namely the organisation, the supervisor and co-workers. Both trust in the organisation and trust in co-workers positively influenced organisational citizenship behaviour. Conversely, authentic leadership did not have a significant influence on organisational citizenship behaviour. Finally, authentic leadership had a significant indirect effect on organisational citizenship behaviour through trust in the organisation and trust in co-workers. Trust in the organisation was found to have the strongest indirect effect on the relationship between authentic leadership and organisational citizenship behaviour.Practical/managerial implications: The main findings suggest that public health care institutions would benefit if leaders are encouraged to be more authentic as this might result in increases in both trust among co-workers and in the organisation. Consequently, employees might be more likely to exert additional effort in their work.Contribution/value-add: Limited empirical evidence exists with regard to the relationship between authentic leadership, workplace trust in its three referents and organisational citizenship behaviour. This study aimed to contribute to the limited number of studies conducted.

18 August 2020 in Frontiers in Psychology
Verified
Journal Article
Open access
PDF file
TTTasmin Towsen
Tasmin Towsen
MSMarius Wilhelm Stander
Marius Wilhelm Stander
LVLeoni Van der Vaart
Leoni Van der Vaart
Employees in the mining sector are faced with a demanding work environment due to external challenges impacting on the organization. Optimizing their engagement is vital in weathering a demanding environment. The aim of this study was to (a) position authentic leadership (AL) and psychological empowerment (PE) as enablers of work engagement (WE); (b) to investigate the processes (i.e., PE) through which AL exerts its effect on WE, and (c) to determine whether contextual factors [i.e., role clarity (RC)] influenced this process. A cross-sectional research design was employed to collect data from 236 employees employed by a coal-mining organization within South Africa. The AL inventory, PE questionnaire, measures of role conflict and ambiguity questionnaire, and UWES-9 was administered to collect data. A moderated-mediation investigation was employed to test the hypotheses. Results supported the value of AL to enhance WE, both directly and indirectly via PE. Results also concluded that AL exerts its influence on WE through PE, regardless of employees’ levels of RC. AL literature is limited, not only in the South African context but also in the mining sector. The study not only extends AL literature by investigating its outcomes in a South African mining organization, but it also does so by investigating the boundary conditions under which AL exerts its influence. The boundaries (i.e., moderation) within which leadership-subordinate relationships (i.e. mediation) function are often neglected in favor of simplified investigations of mediation processes only.

11 January 2021 in South African Journal of Economic and Management Sciences
Verified
Journal Article
Open access
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LVLeoni Van der Vaart
Leoni Van der Vaart
Background: Performance remains high on the agenda of both researchers and practitioners, and rigorous measurement is central to evidence-based investigations. Several instruments have been developed to measure performance, of which one – the Individual Work Performance Questionnaire (IWPQ) – seems to be a scientifically rigorous instrument. Despite the growth in IWPQ validation studies, little is known about its psychometric properties in South Africa.Aim: The current study seeks to address the construct validity of the IWPQ. The objective was to evaluate the construct (i.e. convergent, discriminant and nomological) validity of the instrument.Setting: Information technology professionals were targeted in the current study, and the final sample consisted of 296 employees.Method: Latent variable modelling was performed, using both independent cluster and exploratory structural equation model frameworks, with the mean- and variance-adjusted weighted least squares estimator. The analysis was complemented with the heterotrait-monotrait method.Results: The results supported the construct validity of the instrument. Specifically, individual work performance was found to be a three-dimensional construct with acceptable convergent and discriminant validity. Job resources were also related to the three performance dimensions.Conclusion: The factor structure of the IWPQ mirrors the factor structure found in the literature. Researchers and practitioners can use this instrument in South Africa to identify determinants and consequence of individual work performance, as well as to evaluate the effectiveness of performance improvement interventions.

8 December 2020 in SA Journal of Human Resource Management
Verified
Journal Article
Open access
PDF file
MBMichiel J. Van Den Berg
Michiel J. Van Den Berg
MSMarius W. Stander
Marius W. Stander
LVLeoni Van der Vaart
Leoni Van der Vaart
Orientation: Digital transformation lies at the heart of what has been termed the Fourth Industrial Revolution, and many researchers consider this as one of the most significant drivers of change in the area of human resource management. For this reason, organisations and human resource practitioners (HRPs) are encouraged to re-evaluate their roles to ensure that they are able to impact the business performance.Research purpose: This study reflects upon the potentially unique competency requirements of the HRP in a digitally transformed organisation by exploring the perceptions of the line partner.Motivation for the study: Digitalisation is transforming the roles of HRPs. Consequently, HRPs may need a different set of competencies. Despite the transformation and the associated change in competency requirements, little knowledge exists regarding the HRP competencies needed (especially in digitally transformed organisations).Research approach/design and method: The researcher identified 43 senior line partners through a purposive sampling procedure to participate in semi-structured interviews. Nineteen participants completed the interview process. The researcher analysed the interview data using thematic analysis.Main findings: The main themes are the ability to design, extract, understand, analyse, interpret and apply information (data); continuous learning; stakeholder relationship management; and cultivating positive organisational practices.Practical/managerial implications: The exploration of competencies provides organisations with additional context in terms of the complexity of the environment for the HRP, and provides a model that can be utilised for talent management.Contribution/value-add: This study contributes to the limited knowledge regarding HR competencies in digitally transformed organisations, especially from the perspective of line partners.