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Many questionnaires have been developed to measure how psychosocial characteristics are perceived in a work environment. But the content validity of these questionnaires has rarely been questioned due to the absence of a reference taxonomy for characteristics of work environments.
To propose an exhaustive taxonomy of work environment characteristics involved in psychosocial risks and to apply this taxonomy to questionnaires on workplace psychosocial factors.
The taxonomy was developed by categorizing factors present in the main theoretical models of the field. Questionnaire items most frequently cited in scientific literature were retained for classification.
The taxonomy was structured into four hierarchical levels and comprises 53 categories. The 17 questionnaires analyzed included 927 items: 59 from the “physical environment” category, 116 from the “social environment” category, 236 from the “work activity” category, 255 from the “activity management” category, and 174 from the “organizational context” category.
There are major content differences among analyzed questionnaires. This study offers a means for selecting a scale on the basis of content.
Work-related health risks are a major public health issue. Over the last 30 years, while work-related physical risks have become less frequent in modern western societies, greater importance has been placed on other risks, whose health effects are more insidious because they are less direct and delayed in time. Different expressions are used to describe these non-physical risks, the most frequent of which are “psychosocial hazards” (“psychosocial factors”) and “stressors.” These two expressions convey a negative influence of work on health; therefore we prefer a more neutral expression, namely “work environment characteristics.” In this paper, “work environment characteristics” are characteristics identified by authors who have developed theoretical models of psychosocial hazards potentially harmful for workers.
Apart from a few of notable exceptions,1 the majority of research studies regarding with the influence of work environment characteristics on health focus on the negative effects of these characteristics. These are often qualified as strain or stress, when referring to short-term effects;2 health outcomes per se manifest themselves in the longer term.3 Today, we know a great deal not only about the prevalence of such hazards,4 but also about their psychic,5 somatic6,7 and psycho-somatic8 effects. Moreover, a whole range of theoretical models, emerging from various disciplines and trends, has been developed to explain these effects.9
Identifying work environment characteristics with an impact on health has a purpose in terms of scientific knowledge, but it also promotes occupational health- and stress-related interventions in companies.10 Although other methods for measuring work environment characteristics exist (checklists, observations, interviews, focus groups, etc.), the questionnaire is the preferred methodology for this identification process for both theoretical and practical reasons: (1) when focusing on psychosocial factors, perception of the hazard is more important than the presence of the hazard;11 (2) questionnaires are inexpensive, easy to implement, and generate results that are easy to analyze.12
Following initial work on stress in the workplace in the 1960s and its subsequent embryonic measures,3 many questionnaires have been published, especially since the 1980s.12 There are a number of available questionnaire summaries aimed at highlighting their psychometrical qualities, discussing the relevance of the theoretical model on which they rest, evaluating their cost-usefulness ratio or discussing their limits.2,3,12–14
Descriptions of questionnaire content nevertheless remain superficial.15 Authors typically limit their explanations to a list of the dimension names provided by designers. However, these names are frequently idiosyncratic and may not provide enough information to adequately decide if a given questionnaire effectively measures a specific work environment characteristic. For example, the Job Content Questionnaire16 has been criticized17 for items within the “skill discretion” dimension referring more to aptitude usage, task complexity and task variety, than job control. Furthermore, the exhaustiveness of work environment characteristics measured by various questionnaires is a recurrent issue,18–22 to which satisfactory answers are rarely found. As Rick et al. pointed out,2 even though the psychometrical qualities of most questionnaires are satisfactory, content validity can and should be questioned.
A reference taxonomy for work environment characteristics is required to accurately describe questionnaire content. In 1998, Kasl11 regretted that there was no taxonomy of these characteristics, analogous with Mendeleev’s periodic table of the elements. He proposed a list of 10 work environment categories, which he used to describe the content of 4 questionnaires. Other authors23 also proposed a list of 10 categories, but without an explicit development methodology. Yet, other authors advanced smaller lists broken down into subcategories (nine for Cox24, seven for Cousins et al.25); each of them considering that his or her list represented a reasonable consensus without revealing the criteria for this approval. The typology proposed by Morgeson and Humphrey21 comprised 18 categories, but their approach was deliberately consigned to a specific line of research, namely job design. Others26 considered the taxonomy of Warr27 to be the most comprehensive, but it comprises only nine categories. The most recent and ambitious taxonomic effort has resulted from the work of the National Institute for Occupational Safety and Health researchers,28 who brought together 8 experts to produce a list of 22 categories grouped into four levels (work, organization, interpersonal, and personal). However, for all its interest, this taxonomy was not exclusively based on content criteria: it also took into account pragmatic considerations (such as malleability and the possibility of intervening on the characteristics retained).
Existing questionnaire content descriptions are therefore often general, relatively unsystematic, and based on ad hoc taxonomies or a small number of questionnaires.2,15,28–30 The purpose of this paper is therefore dual: (1) to propose a taxonomy of work environment characteristics that is as exhaustive and detailed as possible by implementing an explicit approach to its development and (2) to apply this taxonomy to existing questionnaires using item contents as analysis units to overcome the terminological idiosyncrasies commonly found in scale headings. Our taxonomy is envisaged across a wide spectrum of theories that not only account for relationships between work environment and health, but also stem from several occupational disciplines.9
To develop the taxonomy, we first selected theoretical models designed to highlight relationships between work environment and health. Models had to refer explicitly to a list of work environment characteristics likely to have an impact on occupational stress and health. The methodologies for the literature review and model selection have been previously published.9
We then extracted the work environment characteristics identified in the selected theoretical models. The first author categorized these characteristics by drawing on and refining existing taxonomies. A hierarchical taxonomy was chosen to ensure the possibility of reporting the specific characteristics introduced by the different researchers. We chose positive or neutral headings for building taxonomy categories (e.g. “role clarity” instead of “role ambiguity;” “variety” instead of “repetitiveness;” “range of relationships” instead of “isolation at work;” etc.). As previously stated, negative expressions convey implicitly the idea of a necessarily negative influence of work on health. Hence, negative terms cannot be sufficient to account for the scope and diversity of work environment characteristics. For example, in the case of role clarity, a worker can be dissatisfied with the lack of role clarity at work (“role ambiguity”), but also with an excess of clarity and preciseness in instructions and orders. The co-authors then classified independently the characteristics listed in the various categories. Each disagreement in classifications was discussed by the authors to reach a consensus. Discussions around disagreements enabled titles to be refined and/or more specific subcategories to be created. A new classification of characteristics in the revised taxonomy was then drawn up independently by at least two of the authors. This process was repeated several times until sufficient convergence of individual categorizations was achieved.
Once the taxonomy was built up, it was applied to psychosocial work environment assessment questionnaires to characterize them and overcome their specific terminological characteristics. We started by retaining the 19 English language questionnaires from the 26 questionnaires listed by Tabanelli et al.12 and we kept the 17 questionnaires for which we could access the detailed content (we failed to find the Stress Risk Assessment Questionnaire and the Stress Profile).31 Questionnaire items were then independently categorized in the taxonomy developed during the previous stage by at least two co-authors. Possible divergences were resolved by comparing viewpoints and consensus.
In addition to univariate and bivariate descriptions, we resorted to correspondence analysis32 to present a summary form of the specific characteristics of the questionnaires content with respect to the taxonomy categories. Correspondence analysis was performed on the contingency table of categories and questionnaires using the FactoMineR package33 provided by R software34.
Seventeen theoretical models representing different lines of research (Institute for Social Research, Person-Environment Fit, Job Design, Preventive Stress Management, etc.) were selected following the literature review (cf. Althaus et al.9 for the list and an analysis of these models). These models relied on lists of work environment characteristics comprising between 9 and 39 items. The total of 315 partially redundant characteristics was used for developing the taxonomy (Table (Table1),1), which enabled classification of virtually all the 315 characteristics. Only six of them could not be included in the grid; these were very general statements referring to the work environment (occupational differences, working conditions) or items unrelated to it (personality variables, external requests).
The resulting taxonomy was composed of 53 categories divided into four hierarchical levels. At its most global level, there were five major areas that could be assessed in relation to their greater or lesser distance from the worker: Physical environment, Social environment, Work activity, Activity management, and Organizational context. Two of these categories were represented in every model considered (Work activity and Activity management), while Social environment was considered in 15 models, Organizational context in 14 and Physical environment in 12. At the lower hierarchical level, the categories most frequently represented were: Work content (15 models), Appropriateness of demands (15), Autonomy-control (15), Assigned role (14), Human resources management (11), and Physical characteristics (10). Categories less frequently represented were Organizational communication (one model), Available resources, Association with decisions, and Organizational climate (each in two models).
The 17 obtainable questionnaires provided a total of 927 items that were categorized at the most refined level of the taxonomy. Table Table33 reports the outcome of this categorization. The most detailed categorization is not shown for reasons of space (see supplemental material for a detailed table). Table Table44 presents each category with one or more examples of items and indicates the questionnaires, in which the category is either strongly or scarcely represented.
The categorization process enabled us to highlight the polysemy of some items. For example, the item “How much influence do you have over the availability of supplies and equipment you need to do your work” in the GJSQ questionnaire refers to both the autonomy a person has in his/her work (Activity management/Autonomy-control category) and the equipment availability (Physical environment/Resources category). The item “Are you content with your ability to maintain a good relationship with your customers or clients?” in the QPS-N questionnaire refers to the Work activity/Appropriateness of demands/Qualitative and Social environment/Quality of relationships/(with) persons outside work categories. We considered therefore that these items assessed two work environment characteristics: one is the initial cause and the other is a possible outcome. In the first example, the level of autonomy can be assimilated to the initial cause and, in the second example, it is the appropriateness of demands in relation to the worker’s resources. We decided to classify all the polysemic items (n = 54, i.e. 5.8%) with respect to their initial cause.
As shown in Table Table3,3, 115 items appeared to be unclassifiable (12.4%) for the following reasons:
Two of the authors classified items independently. When an item obtained two different classifications, the authors resolved the disagreement by consensus. This occurred mostly with items that had an over-general meaning or a meaning too vague to refer directly to a specific category of the taxonomy. Initial disagreements mainly involved distinctions between:
Some differences in classification occurred when categorization was detailed down to three or four levels. This was the case among the subcategories of the following categories: Activity management/Autonomy-control; Activity management/Assigned role; Work activity/work content (variety, interest, meaning).
The Activity management category contained the greatest number of items (30.2% of the 812 items classified in Table Table3).3). The Autonomy-control subcategory represented nearly half of these items (44.9%). It was also the only subcategory of our taxonomy which was present in each questionnaire (Table (Table3).3). Given their accurate meaning, 44 items could be classified in the Decision latitude subcategory, while 31 others referred rather to the notion of Dependence with respect to (a) Other people’s work (14 items), (b) Pace (9 items), and (c) Interruptions (8 items) (see supplemental material). The Assigned role subcategory represented 34.3% of the items in the Activity management category. The items related to Clarity outnumbered those related to Coherence (51 vs. 33). When coherence was accurately defined, it mostly referred to Work requirements (20 items) rather than to work Status (3 items). The last two subcategories founded in the Activity management category were related to Time-pressure (30 items) and to the Feedback provided by the work activity or by a third party (21 items).
The second most frequent category of our classification appeared to be Work activity, which included a number of items close to that of the Activity management category (230 items, i.e. 28.3%). This category included items referring to work-related Demands (which provided information on a level of requirement in absolute terms, 26.5% of items in the category) and Appropriateness of demands (which addressed – explicitly or implicitly – the concordance between the level of requirement and resources available to the person, 34.8% of the items in the category) were the most common. Questions on Demands mostly involved Cognitive demands (21 items), followed by the Physical (11 items) and Emotional (7 items) spheres. Twenty-two items did not specify the type of work-related demands. There were rather more items involving the Quantitative aspects of demand appropriateness (workload: 40 items) than the Qualitative aspects thereof (type of skills: 32 items). Eight items did not specify the type of appropriateness. The Responsibilities subcategory represented 20.9% of all 230 items. When specified, this especially concerned responsibility for Persons (23 items); three items referred to responsibility for Equipment, while the remaining 22 items were not detailed. Activity variety, Work meaning, and Work interest represented 8.7, 4.8, and 4.3% of items in the Work activity category, respectively.
Approximately one out of five items (20.1%) belonged to the main Organizational context category. Overall, the items in the Human resources management subcategory represented 44.8% of these items. This subcategory was further divided as follows: Management style (26 items), Career (24 items), Skills development (8 items), Way in which work is assessed (8 items) and Salary (7 items). Many items referred to Organizational climate (19.0%), followed by items on Prospective (11%), on Perceived fairness (10.4%), on Involvement in decision-making (6.1%), on Time-based organization (5.5%), and on Organizational communication (3.1%).
The main Social environment category represented 14.2% of the items. In this category, items in the Quality of relationships subcategory were the most frequent (47.0%). When specified, it was most often the quality of relationships with the worker’s immediate Superior or superiors that was involved (12 items). Relationships with Colleagues were addressed in eight items and just two items referred to Subordinates. Most items (32) in this subcategory did not detail who is involved. Items involving Social support (39.1%), either Emotional or Instrumental, differed from the preceding items since they referred explicitly to help or assistance provided by colleagues or immediate superiors. When examining the different types of support in greater detail, we found 15 items involving Emotional support, 9 items involving Instrumental support and 21 items that provided no details. In terms of the origin of social support, 21 items targeted the immediate Superior or superiors, and only 9 items targeted the worker’s Colleagues (15 did not detail the provider).
Finally, only 7.3% of the items belonged to the Physical environment category. Among these, Physical characteristics questions were most common (71.2%). Air quality was the focus of most questions (10 items), followed by Temperature (7 items), Noise (5 items), and Light (4 items). Few items involved questioning Resources (resources, equipment) (15.2%). Items involving Work room also formed a rare category. Of the eight items (13.6%) listed, Aesthetics was addressed in four items and Furnishing in two items (2 items did not specify).
Question types analysis was not the aim of this paper. However, it can be said that rating scales with five options were most frequently encountered (43.6% of items). Nearly one-third of the items offered less than 5 reply options (32.4%) and less than one-quarter offered more than five reply options (24.1%). It can be noticed that time-related answers were the most used ones (39.5%), followed by answers offering a degree of agreement (24.9%) and intensity-related answers (16.8%). 15% of items asked directly if the work characteristic was a more or less important source of stress (or even in some cases a source of satisfaction). The rest of the items had specific answers (2.5%) or were open questions (1.3%).
Tables Tables33 and and44 allow us to characterize the content of the 17 questionnaires analyzed by highlighting their specificities. For example, the COPSOQ had proportionally more items in the Quality of relationships, Meaning of work, Time-related pressure – urgency, Work assessment, Perceived fairness, Involvement in decision-making and Organizational communication categories. Conversely, the COPSOQ had proportionally fewer items (or no items at all) in the Physical characteristics, Working rooms, Resources – equipment, Range of relationships, Responsibilities, Variety, Career, Salary, and Skills development categories. The number of items in other categories was proportional to the number observed globally.
The description of questionnaire content was summarized by a correspondence analysis. An initial analysis was conducted based on the five main categories. This revealed opposition in the first dimension between the questionnaires featuring items in the Physical environment category and those not including these items. Based on reviewer feedback, we therefore proceeded with the analysis by making Physical environment a supplementary modality such that it no longer contributed to structuring of the factorial space. The results are presented in graphical form in Fig. Fig.1.1. The first two dimensions explain 89.2% of the variance (57.9 and 31.3%, respectively).
The Activity management and Organizational context categories mainly contributed to defining the first dimension (horizontal). This means that the questionnaires with proportionally more items belonging to the Activity management category tended to have proportionally less items belonging to the Organizational context category and vice versa. The second dimension (vertical) can be defined in the same way by opposing the Social environment and Activity categories. In this two-dimensional space, the way a questionnaire is positioned shows at a glance what was specific to its content based on its distance with respect to the four main categories used in the analysis. For example, the HSE questionnaire was characterized by a large number of items belonging to the Social environment category and a small number of items belonging to the other categories. The JDS had more items belonging to the Activity management category and relatively few belonging to the Organizational context category. The ERI questionnaire was on the top left of the factorial space: it thus included a large number of items from the category that defines the left-hand side of the horizontal dimension (Organizational context) and from the category that defines the upper part of the vertical axis (Activity). Physical environment, introduced as a supplementary modality, was located at the top right of the factorial space, allowing us to highlight the fact that, proportionally, the OSI and OSI-R questionnaires both featured the most items in this category.
In this space, the distance between questionnaires can be seen as a degree of similarity in respect of their content. Thus, in the COPSOQ, the QPS-N, the GJSQ and the WES, the way items were distributed among the four main categories of the taxonomy included in the analysis was very similar for each questionnaire. The same applied to the JCI, OSQ and the WOCCQ, or to the OSI, and the OSI-R. In contrast, some questionnaires appeared to differ from one another in terms of content: this was the case for the HSE compared with the SDS and for the JDS compared with the ERI, which were positioned at extreme opposite ends of the space.
In this article, we first established a taxonomy of psychosocial work environment characteristics based on a review of characteristics of existing theoretical occupational health models. Our resulting taxonomy is comprised of 53 categories, which were hierarchically structured, making it the most detailed current taxonomy of work environments.
This taxonomy was implemented to analyze the content of 927 items contained in 17 questionnaires. To the best of our knowledge, this was the first attempt to comprehensively systematically analyze questionnaire contents. Our analysis indicated that none of the questionnaires studied in this paper can claim to exhaustively assess work environment characteristics, and that non-trivial differences existed between the content of questionnaires.
Most categories in our taxonomy were also found in previous taxonomies. For example, characteristics of the Physical environment, Time-related aspects of work, and Work content were all present in Kasl’s taxonomy.11 Re-groupings by Morgenson and Humphrey21 (Work activity, Work activity/Demands, Social environment, Organizational context) or by Wiegand et al.28 (Work activity, Organizational context, Social environment) were reflected in the five most general level categories present in our taxonomy.
Beyond these similarities, our taxonomy also had a number of original features. First, it is detailed and precise, with 53 categories, compared to the 10 categories in the taxonomy proposed by Stavroula and Aditya,23 18 in Morgeson and Humphrey,21 and 22 in Wiegand et al.28 For example, Work requirements is a unique category in the Wiegand et al. taxonomy,28 whereas we divided it into five subcategories (Demands themselves, for which we distinguish whether the demands are Physical, Cognitive or Emotional and Appropriateness of demands, for which we distinguished whether the appropriateness is Quantitative or Qualitative). Secondly, our taxonomy was structured in a systematically applied hierarchical manner. A similar hierarchical structure can also be found in other taxonomies,21,24,25,27,28 but they are not as systematics as ours. Thirdly, our taxonomy is not limited to one specific theoretical field of research (unlike the Morgeson and Humphrey taxonomy,21 which is dedicated to the job design field). Finally, the only criterion used to establish our taxonomy was comprehensiveness. Other taxonomies relied on several criteria (Wiegand et al.,28 for example, selected their categories partly on the basis of “characteristic malleability”).
Three important points can be highlighted from our description of questionnaire contents. First, items related to the Autonomy-control (Activity management), Appropriateness of demands, Demands, Responsibilities, Quality of relationship, Social support, Role clarity, and Role coherence categories were the most frequent in the questionnaires analyzed. These categories are central to the most widely-held theories in the occupational health, and can be found in the Job-Demands-Control (support) model,49 and the French and Caplan model,50 for example. This centrality emphasizes the importance of various aspects of the occupational role assigned. Secondly, the content of the questionnaires was not always coherent with their underlying theoretical model. For example, it was not surprising that the ERI questionnaire – linked to the eponymous theoretical model51 – contained a vast majority of items referring to the Work activity (6 items out of 16 for the “effort” component of the theory) and Organizational context (6 items out of 16 for the “rewards” component) categories. With regard to the JCQ questionnaire, it was once again not unexpected to note a large number of items involving Social support (3), Demands (12), and Autonomy-control (6), which operationalize the basic concepts of Karasek’s theory.49,52 However, these two questionnaires also contained items which content is not directly related to their respective underlying theories (e.g. Relationship quality and Social support in the first questionnaire and Role coherence and Work activity variety in the second one). Thirdly, questionnaires containing more items and clearly aiming to cover the widest possible work environment field obviously come closest to content exhaustiveness (GJSQ,37 QPS-N).46 However, some characteristics – considered to be a priori important – were not represented (Physical characteristics in the QPS-N questionnaire; Variety of activities, Management style, or Perceived fairness in the GJSQ questionnaire and Interest of activities in both).
The limits of this research are the same as those inherent to any attempt to categorize. The exhaustiveness of our proposed taxonomy can only be assessed by the yardstick of the methodology implemented for its development. As we have based our work on theories, a significant proportion of which are relatively old, we ran the risk of neglecting some work environment characteristics, which appear in more contemporary forms of work organization or which have only recently been considered by researchers. Linked to these aging theoretical frameworks, as our taxonomy was based on a historically dated vocabulary, the choices made with regard to the category headings may not sufficiently highlight some work environment aspects that are more strongly emphasized today (workplace bullying, new technologies, etc.). It would therefore be inappropriate to consider the taxonomy proposed here as definitive; its exhaustiveness is linked to a certain period of time in the development of theoretical models focusing on the relationships between work environment and health. Nevertheless, its hierarchical structure should facilitate the addition of further categories, to take theory development into account. Furthermore, our taxonomy can also be used “as it is” to study the historical development of questionnaire content, although this is not the real aim of the present paper.
The presence of the Physical environment category in the taxonomy could be debated because equipment and physical aspects of the work do not constitute psychosocial factors per se. However, this category was found in most of the theoretical models considered in this study and in the majority of questionnaires analyzed. Dedicated questionnaires53 have been created to measure this risk category but these were not considered for the analysis presented here.
Concerning the description of questionnaire contents, several limitations could be raised. First, we found that some items referred to two different work environment characteristics: one being a cause, and the other one being a consequence. We classified these items according to their meaning as a cause rather than as a consequence (e.g. existence of Decision latitude may influence the Resources/equipment available to complete an activity). Nevertheless, these items could have been considered differently: i.e. as reflecting interactions between categories since these interactions occur in the form of moderating effects (e.g. the effect of low Resources/equipment may be partly counterbalanced by greater Decision latitude). Our taxonomy is flexible enough to switch to this alternative possibility. Secondly, our analysis also revealed that some items could not be classified in the taxonomy and, while their percentage is relatively high (12.4%), we do not believe it raises questions about the relevance of our taxonomy. Indeed, the majority of these items (60%) did not represent work environment characteristics. Other items (34%) could not be classified in our taxonomy because their meaning was too general. In all, out of 927 items, only 7 (0.8%) were unclassifiable. The content of these seven items did not match any of our taxonomic categories. Given this very low percentage and given that the seven items concerned were very specific, it is no exaggeration to say that our taxonomy effectively achieved exhaustiveness. Thirdly, despite this exhaustiveness, we must stress the necessarily reductive nature of the item categorization process. The semantic finesse introduced when classifying some items sometimes casts a doubt on the appropriateness of their classification. Conversely, some wordings make it impossible to easily recognize certain distinctions introduced into the taxonomy. The prototypical example illustrating this point is that of the categories Quality of relationships/superiors, Activity management, and Management style. Several items could be classified in one or another of these categories. Thus, if these distinctions are theoretically relevant, we hope that the present work will prompt questionnaire designers to use less ambiguous wordings that better reveals to which category an item belongs. A fourth limit of this study relates to comparison between questionnaires, which was restricted to the work environment characteristics addressed. Other item aspects were omitted, e.g. wording, level of language, length, etc. With regard to these aspects, how questionnaire responses are prompted and considered are perhaps the most fundamental ones. Some items attempted to measure exposure level (with time- or intensity-related answers), while others tended to assess exposure consequences (with answers given in degree-of-agreement terms). Such elements should be taken into account in future work. Finally, the approach adopted in this paper remains purely descriptive. Far more accurate theoretical models than those currently available would be required to fully assess the validity of questionnaire content. However, as Cattell53 observed in a completely different context, “(…) a good descriptive taxonomy, as Darwin found in developing his theory, and as Newton found in the work of Kepler, is the mother of laws and theories” and our contribution should be viewed so.
In their paper, describing construction of the JDS questionnaire, Hackman and Oldham40 wrote: “Any measuring device is based on some underlying theory of ‘what’s important’ regarding the phenomena under consideration (even if such a theory is implicit) (…).” We hope that the present study has succeeded in highlighting the various work environment characteristics considered to be important in the different questionnaires analyzed. From an occupational health intervention perspective, it is important to select an instrument that embraces a wide range of work environment characteristics or, at least, does not overlook segments of the environment likely to be determinant for intervention success. While this condition is necessary, it is clearly not sufficient, and other criteria should be taken into account. These criteria should depend on scientific development in a research field, in particular aspects expressing the predictive validity of work environment characteristics on health.5,54 Moreover, criteria should depend on the match between the type of information sought (exposure level or exposure consequences) and the intervention context. For example, if an occupational safety and health (OSH) specialist has no ready-formed hypotheses concerning the type of difficulties employees face, a questionnaire providing balanced sampling of the different work environment characteristics will undoubtedly be the most suitable (i.e. questionnaires appearing in the center of Fig. Fig.1).1). In contrast, if a researcher wishes to assess the effects of preventing actions/training on local management, he/she should opt for an instrument that maximizes items in the Activity management category (i.e. questionnaires appearing in the right-hand part of Fig. Fig.1).1). If this preventive action occurs in an industrial company, it will undoubtedly be necessary to try to consider possible interactions with the perceived characteristics of the physical environment and, thus, to opt for a questionnaire comprising items based on this category (i.e. questionnaires appearing at the top of the right-hand part of Fig. Fig.11).
The purpose of this paper is to incite users to select a questionnaire on the basis of how well its content corresponds to their needs in relation to their problem area or on the basis of what they anticipate in terms of company issues, rather than on the basis of its popularity.3
No potential conflict of interest was reported by the authors.
The supplemental material for this paper is available at http://dx.doi.org/10.1080/10773525.2016.1185214.