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Article ; Online: [Polish adaptation and validation of the

Jasiński, Arkadiusz Mirosław / Derbis, Romuald / Koopmans, Linda

2023 Volume 74, Issue 5, Page(s) 389–398

Abstract: Background: The objective of this study was to test the psychometric properties of the Polish version of the: Material and methods: The study was conducted on 3 independent samples of 1582, 581 and 40 individuals employed as manual workers, social ... ...

Title translation	Polska adaptacja i walidacja
Abstract	Background: The objective of this study was to test the psychometric properties of the Polish version of the Material and methods: The study was conducted on 3 independent samples of 1582, 581 and 40 individuals employed as manual workers, social service and white collar workers. To test the IWPQ structure an exploratory factor analysis was conducted. Multigroup confirmatory factor analysis and invariance test were carried out among subgroups. The reliability was assessed by means of Cronbach's α coefficient (internal consistent) and test-retest (stability over time) method, with a 4-week follow-up. The construct validity of the IWPQ was tested by means of correlation analysis, using work engagement, positive and negative affect at work, and job burnout as the criterion variables. Results: The Polish version of the IWPQ displays very good internal consistency, theoretical validity, and test-retest stability. The results of the factor analysis confirmed a 3-factor structure of the questionnaire. Construct invariance across subgroups was confirmed. Task performance was negatively correlated with negative affect at work, job burnout and positively correlated with work engagement and positive affect at work. Contextual performance was negatively related with counterproductive work behaviors, negative affect at work and positively related with work engagement. Conclusions: The Polish version of the IWPQ - like the original scale - consists of 18 items and has 3 subscales. Despite certain limitations the Polish version of the IWPQ shows good psychometric properties and it can be used to measure individual work performance in Polish conditions. Med Pr Work Health Saf. 2023;76(5):389-98.
MeSH term(s)	Humans ; Work Performance ; Poland ; Reproducibility of Results ; Surveys and Questionnaires ; Work Engagement ; Burnout, Professional ; Psychometrics
Language	Polish
Publishing date	2023-12-05
Publishing country	Poland
Document type	English Abstract ; Journal Article
ZDB-ID	128739-4
ISSN	2353-1339 ; 0465-5893
ISSN (online)	2353-1339
ISSN	0465-5893
DOI	10.13075/mp.5893.01419
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Article ; Online: The Individual Work Performance Questionnaire: Psychometric Properties of the Italian Version.

Platania, Silvia / Morando, Martina / Gruttadauria, Stefania Valeria / Koopmans, Linda

European journal of investigation in health, psychology and education

2023 Volume 14, Issue 1, Page(s) 49–63

Abstract: Individual work performance can be defined as individual behaviour capable of generating value and a competitive advantage for the organization. Furthermore, this construct is linked to other fundamental variables that constitute worker well-being, such ... ...

Abstract	Individual work performance can be defined as individual behaviour capable of generating value and a competitive advantage for the organization. Furthermore, this construct is linked to other fundamental variables that constitute worker well-being, such as job satisfaction and engagement. Although important, a complete measure of individual work performance is still lacking in the Italian context. The objective of this work is to validate the Individual Work Performance Questionnaire (IWPQ) within the Italian organisational context. The IWPQ is a multi-dimensional construct consisting of task performance, contextual performance, and counterproductive work behavior. To investigate the psychometric properties of the Italian IWPQ, 1053 participants were enrolled, whose ages ranged between 19 and 69 years. EFA, CFA, and MCFA analyses were performed to test the structural factors of the IWPQ. The results supported the validity of the IWPQ in the Italian context; the final structure consisted of 17 items. Multigroup confirmatory factor analysis showed that the factor solution was invariant across both gender and occupational categories and found evidence of metric, uniqueness, scalar, and structural invariance. Convergent validity was also tested and demonstrated. Adequate studies on the importance of individual performance can be used to better understand and distinguish the different components affecting performance.
Language	English
Publishing date	2023-12-22
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	3041279-1
ISSN	2254-9625 ; 2174-8144
ISSN (online)	2254-9625
ISSN	2174-8144
DOI	10.3390/ejihpe14010004
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Cross-cultural adaptation, from Dutch to Swedish language, of the Individual Work Performance Questionnaire.

Dåderman, Anna M / Ingelgård, Anders / Koopmans, Linda

Work (Reading, Mass.)

2019 Volume 65, Issue 1, Page(s) 97–109

Abstract: Background: There is a need for a short, self-rated, validated and reliable instrument for individual work performance suitable for generic use in the Swedish work and organizational context. The Individual Work Performance Questionnaire (IWPQ), ... ...

Abstract	Background: There is a need for a short, self-rated, validated and reliable instrument for individual work performance suitable for generic use in the Swedish work and organizational context. The Individual Work Performance Questionnaire (IWPQ), comprising originally 47 items, was initially developed in the Netherlands, based on a four-dimensional conceptual framework, in which individual work performance consisted of task performance, contextual performance, adaptive performance, and counterproductive work behavior. During the development process, IWPQ was shortened to 18 items with three scales formally labeled as Task performance, Contextual performance, and Counterproductive work behavior (CWB), capturing three work performance types. The current version of the IWPQ, consisting of 18 items and three scales, was then translated as well as cross-culturally adapted to American-English and Indonesian contexts. Objectives: To translate and adapt the current IWPQ version, consisting of 18 items, from the Dutch to the Swedish context, to assess its content validity through cognitive interviews, to apply it to a pilot group to present descriptive statistics, to calculate the questionnaire's internal consistency, as well as to clarify whether the translated items capture three or four performance types. Methods: The Dutch version of the IWPQ, consisting of 18 items, was translated into Swedish. A six-stage translation and adaptation process was used: forward translation, synthesis, back translation, harmonization, cognitive interviews, revision, and sampling and analyses of pilot data for 206 managers (149 women) from five Swedish municipalities. Results: IWPQ instructions, wording of a few items and one response form were slightly modified. The pilot testing showed Cronbach's alphas similar to the Dutch version of the IWPQ, ranging between 0.73 and 0.82, good mean-inter-item correlations (all above 0.36). In deciding how many factors to retain, we employed both parallel analysis (PA), and Velicer's minimum average partial (MAP) test. The number of factors to retain was, as indicated by PA, four, and by MAP, three or four. Exploratory factor analysis (principal axis factoring) revealed clearly separate factors, corresponding to four, rather than three, performance types. A new factor, roughly representing adaptive performance, comprised in the original, longer version of the IWPQ, emerged. Conclusions: The Swedish version of the IWPQ was successfully translated and adapted in a pilot group of managers. Before it is used, it should be validated in a larger group of managers and in more heterogeneous groups of both white- and blue-collar workers.
MeSH term(s)	Cross-Cultural Comparison ; Employee Performance Appraisal/methods ; Female ; Humans ; Male ; Pilot Projects ; Psychometrics ; Reproducibility of Results ; Surveys and Questionnaires ; Sweden ; Translating ; Work
Language	English
Publishing date	2019-12-21
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	1394194-x
ISSN	1875-9270 ; 1051-9815
ISSN (online)	1875-9270
ISSN	1051-9815
DOI	10.3233/WOR-193062
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Article: Development of an individual work performance questionnaire

Beek, Allard J. van der / Bernaards, Claire / Buuren, Stef van / Hildebrandt, Vincent / Koopmans, Linda

The international journal of productivity and performance management : IJPPM Vol. 62, No. 1 , p. 6-28

2013 Volume 62, Issue 1, Page(s) 6–28

Author's details	Linda Koopmans; Claire Bernaards; Vincent Hildebrandt; Stef van Buuren; Allard J. van der Beek
Keywords	Arbeitsleistung ; Performance-Messung ; Niederlande
Language	English
Size	graph. Darst.
Publisher	Emerald
Publishing place	Bingley
Document type	Article
ZDB-ID	2135449-2 ; 2024364-9
ISSN	1741-0401 ; 0043-8022
ISSN	1741-0401 ; 0043-8022
Database	ECONomics Information System

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Article ; Online: Cross-cultural adaptation of the Individual Work Performance Questionnaire.

Koopmans, Linda / Bernaards, Claire M / Hildebrandt, Vincent H / Lerner, Debra / de Vet, Henrica C W / van der Beek, Allard J

Work (Reading, Mass.)

2015 Volume 53, Issue 3, Page(s) 609–619

Abstract: Background: The Individual Work Performance Questionnaire (IWPQ), measuring task performance, contextual performance, and counterproductive work behavior, was developed in The Netherlands.: Objectives: To cross-culturally adapt the IWPQ from the ... ...

Abstract	Background: The Individual Work Performance Questionnaire (IWPQ), measuring task performance, contextual performance, and counterproductive work behavior, was developed in The Netherlands. Objectives: To cross-culturally adapt the IWPQ from the Dutch to the American-English language, and assess the questionnaire's internal consistency and content validity in the American-English context. Methods: A five stage translation and adaptation process was used: forward translation, synthesis, back-translation, expert committee review, and pilot-testing. During the pilot-testing, cognitive interviews with 40 American workers were performed, to examine the comprehensibility, applicability, and completeness of the American-English IWPQ. Results: Questionnaire instructions were slightly modified to aid interpretation in the American-English language. Inconsistencies with verb tense were identified, and it was decided to consistently use simple past tense. The wording of five items was modified to better suit the American-English language. In general, participants were positive on the comprehensibility, applicability and completeness of the questionnaire during the pilot-testing phase. Furthermore, the study showed positive results concerning the internal consistency (Cronbach's alphas for the scales between 0.79-0.89) and content validity of the American-English IWPQ. Conclusion: The results indicate that the cross-cultural adaptation of the American-English IWPQ was successful and that the measurement properties of the translated version are promising.
MeSH term(s)	Adult ; Behavior ; Comprehension ; Cultural Competency ; Female ; Humans ; Male ; Organizational Objectives ; Pilot Projects ; Psychometrics ; Reproducibility of Results ; Self-Assessment ; Surveys and Questionnaires ; Translations ; United States ; Work ; Young Adult
Language	English
Publishing date	2015
Publishing country	Netherlands
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1394194-x
ISSN	1875-9270 ; 1051-9815
ISSN (online)	1875-9270
ISSN	1051-9815
DOI	10.3233/WOR-152237
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Article: Improving the Individual Work Performance Questionnaire using Rasch analysis.

Koopmans, Linda / Bernaards, Claire M / Hildebrandt, Vincent H / van Buuren, Stef / van der Beek, Allard J / de Vet, Henrica C W

Journal of applied measurement

2014 Volume 15, Issue 2, Page(s) 160–175

Abstract: Recently, the Individual Work Performance Questionnaire (IWPQ) version 0.2 was developed using Rasch analysis. The goal of the current study was to improve targeting of the IWPQ scales by including additional items. The IWPQ 0.2 (original) and 0.3 ( ... ...

Abstract	Recently, the Individual Work Performance Questionnaire (IWPQ) version 0.2 was developed using Rasch analysis. The goal of the current study was to improve targeting of the IWPQ scales by including additional items. The IWPQ 0.2 (original) and 0.3 (including additional items) were examined using Rasch analysis. Additional items that showed misfit or did not improve targeting were removed from the IWPQ 0.3, resulting in a final IWPQ 1.0. Subsequently, the scales showed good model fit and reliability, and were examined for key measurement requirements (e.g., category ordening, unidimensionality, and differential item functioning). Finally, calculation and interpretability of scores were addressed. Compared to its previous version, the final IWPQ 1.0 showed improved targeting for two out of three scales. As a result, it can more reliably measure workers at all levels of ability, discriminate between workers at a wider range on each scale, and detect changes in individual work performance.
MeSH term(s)	Adolescent ; Adult ; Aged ; Employee Performance Appraisal/statistics & numerical data ; Female ; Humans ; Male ; Middle Aged ; Models, Statistical ; Netherlands ; Psychometrics/statistics & numerical data ; Reproducibility of Results ; Surveys and Questionnaires ; Young Adult
Language	English
Publishing date	2014
Publishing country	United States
Document type	Journal Article
ISSN	1529-7713
ISSN	1529-7713
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Measuring individual work performance: identifying and selecting indicators.

Koopmans, Linda / Bernaards, Claire M / Hildebrandt, Vincent H / de Vet, Henrica C W / van der Beek, Allard J

Work (Reading, Mass.)

2014 Volume 48, Issue 2, Page(s) 229–238

Abstract: Background: Theoretically, individual work performance (IWP) can be divided into four dimensions: task performance, contextual performance, adaptive performance, and counterproductive work behavior. However, there is no consensus on the indicators used ... ...

Abstract	Background: Theoretically, individual work performance (IWP) can be divided into four dimensions: task performance, contextual performance, adaptive performance, and counterproductive work behavior. However, there is no consensus on the indicators used to measure these dimensions. Objective: This study was designed to (1) identify indicators for each dimension, (2) select the most relevant indicators, and (3) determine the relative weight of each dimension in ratings of work performance. Methods: IWP indicators were identified from multiple research disciplines, via literature, existing questionnaires, and expert interviews. Subsequently, experts selected the most relevant indicators per dimension and scored the relative weight of each dimension in ratings of IWP. Results: In total, 128 unique indicators were identified. Twenty-three of these indicators were selected by experts as most relevant for measuring IWP. Task performance determined 36% of the work performance rating, while the other three dimensions respectively determined 22%, 20% and 21% of the rating. Conclusions: Notable consensus was found on relevant indicators of IWP, reducing the number from 128 to 23 relevant indicators. This provides an important step towards the development of a standardized, generic and short measurement instrument for assessing IWP.
MeSH term(s)	Adult ; Behavior ; Efficiency ; Employee Performance Appraisal/methods ; Female ; Humans ; Male ; Middle Aged ; Organizational Objectives ; Problem Solving ; Surveys and Questionnaires ; Task Performance and Analysis ; Workplace/organization & administration
Language	English
Publishing date	2014
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	1394194-x
ISSN	1875-9270 ; 1051-9815
ISSN (online)	1875-9270
ISSN	1051-9815
DOI	10.3233/WOR-131659
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Article ; Online: Construct validity of the individual work performance questionnaire.

Koopmans, Linda / Bernaards, Claire M / Hildebrandt, Vincent H / de Vet, Henrica C W / van der Beek, Allard J

Journal of occupational and environmental medicine

2014 Volume 56, Issue 3, Page(s) 331–337

Abstract: Objective: To examine the construct validity of the Individual Work Performance Questionnaire (IWPQ).: Methods: A total of 1424 Dutch workers from three occupational sectors (blue, pink, and white collar) participated in the study. First, IWPQ scores ...

Abstract	Objective: To examine the construct validity of the Individual Work Performance Questionnaire (IWPQ). Methods: A total of 1424 Dutch workers from three occupational sectors (blue, pink, and white collar) participated in the study. First, IWPQ scores were correlated with related constructs (convergent validity). Second, differences between known groups were tested (discriminative validity). Results: First, IWPQ scores correlated weakly to moderately with absolute and relative presenteeism, and work engagement. Second, significant differences in IWPQ scores were observed for workers differing in job satisfaction, and workers differing in health. Conclusion: Overall, the results indicate acceptable construct validity of the IWPQ. Researchers are provided with a reliable and valid instrument to measure individual work performance comprehensively and generically, among workers from different occupational sectors, with and without health problems.
MeSH term(s)	Adolescent ; Adult ; Aged ; Behavior ; Female ; Health Status ; Humans ; Job Satisfaction ; Male ; Middle Aged ; Netherlands ; Occupations ; Reproducibility of Results ; Self-Assessment ; Surveys and Questionnaires ; Task Performance and Analysis ; Workplace ; Young Adult
Language	English
Publishing date	2014-03
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't ; Validation Studies
ZDB-ID	1223932-x
ISSN	1536-5948 ; 1076-2752
ISSN (online)	1536-5948
ISSN	1076-2752
DOI	10.1097/JOM.0000000000000113
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Article ; Online: Conceptual frameworks of individual work performance: a systematic review.

Koopmans, Linda / Bernaards, Claire M / Hildebrandt, Vincent H / Schaufeli, Wilmar B / de Vet Henrica, C W / van der Beek, Allard J

Journal of occupational and environmental medicine

2011 Volume 53, Issue 8, Page(s) 856–866

Abstract: Objective: Individual work performance is differently conceptualized and operationalized in different disciplines. The aim of the current review was twofold: (1) identifying conceptual frameworks of individual work performance and (2) integrating these ... ...

Abstract	Objective: Individual work performance is differently conceptualized and operationalized in different disciplines. The aim of the current review was twofold: (1) identifying conceptual frameworks of individual work performance and (2) integrating these to reach a heuristic conceptual framework. Methods: A systematic review was conducted in medical, psychological, and management databases. Studies were selected independently by two researchers and included when they presented a conceptual framework of individual work performance. Results: A total of 17 generic frameworks (applying across occupations) and 18 job-specific frameworks (applying to specific occupations) were identified. Dimensions frequently used to describe individual work performance were task performance, contextual performance, counterproductive work behavior, and adaptive performance. Conclusion: On the basis of the literature, a heuristic conceptual framework of individual work performance was proposed. This framework can serve as a theoretical basis for future research and practice.
MeSH term(s)	Concept Formation ; Humans ; Task Performance and Analysis ; Work Capacity Evaluation
Language	English
Publishing date	2011-08
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't ; Review
ZDB-ID	1223932-x
ISSN	1536-5948 ; 1076-2752
ISSN (online)	1536-5948
ISSN	1076-2752
DOI	10.1097/JOM.0b013e318226a763
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Article ; Online: Responsiveness of the individual work performance questionnaire.

Koopmans, Linda / Coffeng, Jennifer K / Bernaards, Claire M / Boot, Cécile R L / Hildebrandt, Vincent H / de Vet, Henrica C W / van der Beek, Allard J

BMC public health

2014 Volume 14, Page(s) 513

Abstract: Background: Individual work performance is an important outcome measure in studies in the workplace. Nevertheless, its conceptualization and measurement has proven challenging. To overcome limitations of existing scales, the Individual Work Performance ... ...

Abstract	Background: Individual work performance is an important outcome measure in studies in the workplace. Nevertheless, its conceptualization and measurement has proven challenging. To overcome limitations of existing scales, the Individual Work Performance Questionnaire (IWPQ) was recently developed. The aim of the current study was to gain insight into the responsiveness of the IWPQ. Methods: Data were used from the Be Active & Relax randomized controlled trial. The aim of the trial was to investigate the effectiveness of an intervention to stimulate physical activity and relaxation of office workers, on need for recovery. Individual work performance was a secondary outcome measure of the trial. In total, 39 hypotheses were formulated concerning correlations between changes on the IWPQ scales and changes on similar constructs (e.g., presenteeism) and distinct constructs (e.g., need for recovery) used in the trial. Results: 260 Participants completed the IWPQ at both baseline and 12 months of follow-up. For the IWPQ scales, 23%, 15%, and 38%, respectively, of the hypotheses could be confirmed. In general, the correlations between change scores were weaker than expected. Nevertheless, at least 85% of the correlations were in the expected direction. Conclusions: Based on results of the current study, no firm conclusions can be drawn about the responsiveness of the IWPQ. Several reasons may account for the weaker than expected correlations. Future research on the IWPQ's responsiveness should be conducted, preferably in other populations and intervention studies, where greater changes over time can be expected.
MeSH term(s)	Adult ; Employee Performance Appraisal/statistics & numerical data ; Female ; Humans ; Male ; Motor Activity ; Netherlands ; Occupational Health Services ; Randomized Controlled Trials as Topic ; Relaxation ; Reproducibility of Results ; Surveys and Questionnaires ; Workplace
Language	English
Publishing date	2014-05-27
Publishing country	England
Document type	Journal Article ; Randomized Controlled Trial ; Research Support, Non-U.S. Gov't ; Validation Study
ISSN	1471-2458
ISSN (online)	1471-2458
DOI	10.1186/1471-2458-14-513
Database	MEDical Literature Analysis and Retrieval System OnLINE

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