Guy Moors

Exploring the effect of a middle response category on response style in attitude measurement.

In this research we focus on the link between response style behaviour in answering rating data such as Likert scales and the number of response categories that is offered. In a split-ballot experiment two versions of a questionnaire were randomly administered. The questionnaires only differed in the number of response categories, i.e. 5 vs. 6 categories. In both samples a latent-class confirmatory factor analysis revealed an extreme response style factor. The 6-response categories version, however, revealed the more consistent set of effects. As far as the content latent-class factors, i.e. familistic values and ethnocentrism, are concerned, results were fairly similar. However, a somewhat deviant pattern regarding the familistic values items in the 6-response categories version suggested that this set of items is less homogeneous than the set of ethnocentric items. The effect of gender, age and education was also tested and revealed similarities as well as differences between the two samples.

Measurement equivalence in solidarity attitudes in Europe : Insights from a multiple-group latent-class factor approach

Comparing solidarity attitudes of European citizens is highly relevant in the context of European integration and unification. Such comparisons, however, are only valid if responses to attitude questions reflect true differences in solidarity and, hence, the measurement of latent solidarity attitudes is comparable. Often comparability is assumed, rarely is it tested. This research presents a multiple-group latent-class factor analysis of a set of questions concerning solidarity towards different social groups, taken from the 1999/2000 wave of the European Value Study. This multiple-group comparison reveals that equivalence in attitude measurement is not established straightforwardly. However, once the sources of measurement inequivalence are taken into account, valid comparison between countries is possible. It turns out that European countries are less divided on the solidarity attitudes than would have been concluded from a model that did not account for heterogeneity in measurement. At the same time, the improved model only slightly altered country rankings on solidarity dimensions.

Splitting Up or Getting Married? Competing Risk Analysis of Transitions Among Cohabiting Couples in Sweden

In this article, we investigate which ideational variables influence the propensity of cohabiting couples to transform their union into marriage, separation or continued cohabitation. The question is particularly relevant in the Swedish context of considerable social acceptance of unmarried cohabitation even among parents. A two-wave panel study including 705 never-married respondents cohabiting at the time of the first survey shows that ideational factors influence subsequent behaviour, even when different sets of control variables are included in the model. Familistic attitudes, work-related values and reflections about the quality of the relationship prove to be predictors of the transition to either marriage or separation even when intentions are taken into account.

The structuring of occupational stressors in a Post-Fordist work environment. Moving beyond traditional accounts of demand, control and support

In this study, the traditional components of the Demand-Control-Support-Model are extended with a broad number of occupational stressors, while investigating associations with persistent fatigue, musculoskeletal complaints and emotional well-being. Furthermore, it is assessed how these stressors are structured into distinct dimensions within a population of wage-earners. In a representative cross-sectional sample of 11,099 Flemish (Belgian) employees a range of loglinear techniques is used: logit modelling, latent class analysis and Modified LISREL-modelling. Quantitative, emotional and physical demands, repetitive movements, types of work schedules, problematic autonomy, task variation, social relationships with superiors, job insecurity and bullying behaviour are associated with at least one of the health outcomes, while sudden schedule changes are not. These occupational stressors constitute five dimensions: immaterial demands, physical demands, control over the work environment, social relationships at work and employment uncertainty. These latent dimensions are all significantly related with at least one of the health outcomes - with immaterial demands having the strongest effects. Contemporary work is characterised by a complex combination of stressors, structured within the population into a number of dimensions. More research on the interrelatedness of occupational stressors is needed.

The Effect of Labeling and Numbering of Response Scales on the Likelihood of Response Bias

Extreme response style (ERS) and acquiescence response style (ARS) are among the most encountered problems in attitudinal research. The authors investigate whether the response bias caused by these response styles varies with following three aspects of question format: full versus end labeling, numbering answer categories, and bipolar versus agreement response scales. A questionnaire was distributed to a random sample of 5,351 respondents from the Longitudinal Internet Studies for the Social Sciences household panel, of which a subsample was assigned to one of five conditions. The authors apply a latent class factor model that allows for diagnosing and correcting for ERS and ARS simultaneously. The results show clearly that both response styles are present in the data set, but ARS is less pronounced than ERS. With regard to format effects, the authors find that end labeling evokes more ERS than full labeling and that bipolar scales evoke more ERS than agreement style scales. With full labeling, ERS opposes opting for middle response categories, whereas end labeling distinguishes ERS from all other response categories. ARS did not significantly differ depending on test conditions.

The effect of response style bias on the measurement of transformational, transactional, and laissez-faire leadership

Transformational, transactional, and laissez-faire leadership are considered to be three distinct leadership styles. In this research we argue that response style behaviour in the form of acquiescence and extreme response style can distort the measurement of these dimensions of leadership. Using a sample of 864 employees selected from 135 work teams, this research demonstrates that (1) response styles affect measurement; (2) divergent validity of the three dimensions increases when response styles are taken into account; (3) gender is spuriously related to leadership upon response styles; and (4) team ratings substantially change when controlling for response styles bias. As a secondary topic of this research, we elaborate on a relatively new approach in diagnosing response styles, i.e., a confirmatory latent-class factor analysis. We explain the advantages of this approach and illustrate the steps a researcher has to take in conducting this type of analysis.

Linking credentialed skills, social class, working conditions and self-reported health: a focus on health inequality-generating mechanisms.

In this study, focus is on the mechanisms linking credentialed skills and social class relations to five dimensions of occupational stressors and three self-reported health outcomes: persistent fatigue, musculoskeletal complaints and emotional wellbeing. We test for direct health associations of skills/class. Moreover, indirect health associations of skills/class, through differential exposure to occupational stressors and effect modifications of the occupational stressors, are tested. A modified LISREL analysis is applied to a representative cross-sectional sample of 11,099 Flemish wage-earners. The direct health effects of credentialed skills/class are limited, but they are clearly indirectly related to the self-reported health outcomes through differential exposure to occupational stressors. The indirect mechanisms point to both reinforcing and moderating effects on socio-economic health inequalities. Two cases of effect modification are also observed: social class modifying the association between control and persistent fatigue; and skills affecting the association between the quality of social relations and emotional wellbeing. Differential exposure to occupational stressors is a crucial mechanism linking skills/class to socio-economic health inequalities. Direct effects and effect modification of class/skills are relevant, but of limited importance. One of the effect modifications found suggests that a specific focus on contradictory class positions might be warranted in future research.

Analysis of Cross-Cultural Comparability of PISA 2009 Scores:

The Program for International Student Assessment (PISA) is a large-scale cross-national study that measures academic competencies of 15-year-old students in mathematics, reading, and science from more than 50 countries/economies around the world. PISA results are usually aggregated and presented in so-called “league tables,” in which countries are compared and ranked in each of the three scales. However, to compare results obtained from different groups/countries, one must first be sure that the tests measure the same competencies in all cultures. In this paper, this is tested by examining the level of measurement equivalence in the 2009 PISA data set using an item response theory approach (IRT) and analyzing differential item functioning (DIF). Measurement in-equivalence was found in the form of uniform DIF. In-equivalence occurred in a majority of test questions in all three scales researched and is, on average, of moderate size. It varies considerably both across items and across countries. When this uniform DIF is accounted for in the in-equivalent model, the resulting country scores change considerably in the cases of the “Mathematics,” “Science,” and especially, “Reading” scale. These changes tend to occur simultaneously and in the same direction in groups of regional countries. The most affected seems to be Southeast Asian countries/territories whose scores, although among the highest in the initial, homogeneous model, additionally increase when accounting for in-equivalence in the scales.

Comparing Moral Values in Western European Countries between 1981 and 1999. A Multiple Group Latent-Class Factor Approach

This paper compares moral values in 12 European countries based on data from three waves of the European Values Survey: 1981, 1990, and 1999. We question the validity of comparisons across cultures and in time if the structural equivalence in the measurement of values is not tested. A procedure is suggested to research equivalence in measurement within a latent-class factor approach. Multiple group analyses revealed that assuming a homogeneous measurement model is not justified. Rather patterns of partial homogeneity emerged in which country and period influenced moral issues independently from the effect of two group variables on the latent-class factors. As a result, country differences generally decreased when direct effects of country on the items were introduced, however without contradicting the comparisons from the homogeneous measurement model. Period differences decreased less after allowing direct effects of the former group variable on the items.

The clustering of health-related occupational stressors among contemporary wage-earners

In this study, it is investigated whether a typology can be imposed upon a sample of wage-earners, based on their exposure to a broad number of occupational stressors: quantitative, emotional, and physical demands, repetitive movements, atypical schedules, low job control, relationships with superiors, job insecurity, and bullying behaviour. Also associations between this typology and measures of emotional problems (EP) and musculoskeletal complaints (MC) are tested. Logistic regression and a latent class cluster analysis are performed on a representative sample of 10,074 Flemish (Belgian) employees. Five clusters are revealed: “low stress”, “high stress”, “manual-passive”, “human contact”, and “high demand”. These clusters are showing a clear socioeconomic distribution and distinct associations with EP and MC—with the “high stress cluster” being the most problematic. Health-damaging occupational stress clusters are prevalent at both higher and lower socioeconomic positions. This is suggesting a complex relationship between occupational stressors and socioeconomic health variations.