Understanding and the facts

If understanding is factive, the propositions that express an understanding are true. I argue that a factive conception of understanding is unduly restrictive. It neither reflects our practices in ascribing understanding nor does justice to contemporary science. For science uses idealizations and models that do not mirror the facts. Strictly speaking, they are false. By appeal to exemplification, I devise a more generous, flexible conception of understanding that accommodates science, reflects our practices, and shows a sufficient but not slavish sensitivity to the facts.

Are indigenous personality dimensions culture-specific? Mexican inventories and the Five-Factor Model

The universality versus cultural specificity of Mexican personality dimensions was investigated by examining: (a) the replicability of Mexican personality dimensions assessed by indigenous inventories; and (b) the extent to which Mexican dimensions are encompassed by the Five-Factor Model (FFM), one hypothesized universal model of personality structure. Mexican university students (N = 794) completed nine indigenous inventories and the Spanish version of the Revised NEO Personality Inventory. The FFM replicated well, although reliability was poor for a few facet scales. Reliability was acceptable for the indigenous Mexican scales. However, for most indigenous instruments, a cross-sample replication criterion suggested alternative structures of fewer, more replicable dimensions. Multiple regression and joint factor analyses revealed that most of the Mexican dimensions were well subsumed by the FFM. Thus, cultural differences did not involve clearly culture-specific dimensions, but more subtle differences in the salience or cultural flavor of particular traits.     

Measuring Big-Five personality dimensions with the implicit association test – Implicit personality traits or self-esteem?

We examined whether the implicit association test (IAT) could serve as an implicit measure of the dimensions of the Five-Factor Model of Personality. In the first study (N = 84) IAT-effects of the Big-Five (Extraversion, Agreeableness, Conscientiousness, Neuroticism and Openness) were found and the IAT showed good internal consistencies and convergent validity with an explicit Big-Five questionnaire (NEO-FFI-30). In a second study (N = 50), conducted to determine the overlap of the personality-IATs with implicit self-esteem, the Extraversion and the Neuroticism-IAT were shown to correlate with a self-esteem-IAT only moderately.     

Measuring the ability of transitive reasoning,using product and strategy information

Cognitive theories disagree about the processes and the number of abilities involved in transitive reasoning. This led to controversies about the influence of task characteristics on individuals' performance and the development of transitive reasoning. In this study, a computer test was constructed containing 16 transitive reasoning tasks having different characteristics with respect to presentation form, task format, and task content. Both product and strategy information were analyzed to measure the performance of 6- to 13-year-old children. Three methods (MSP, DETECT, and Improved DIMTEST) were used to determine the number of abilities involved and to test the assumptions imposed on the data by item response models. Nonparametric IRT models were used to construct a scale for transitive reasoning. Multiple regression was used to determine the influence of task characteristics on the difficulty level of the tasks. It was concluded that: (1) the qualitatively distinct abilities predicted by Piaget's theory could not be distinguished by means of different dimensions in the data structure; (2) transitive reasoning could be described by one ability, and some task characteristics influenced the difficulty of a task; and (3) strategy information provided a stronger scale than product information.     

A relation between a between-item multidimensional IRT model and the mixture rasch model

Two generalizations of the Rasch model are compared: the between-item multidimensional model (Adams, Wilson, and Wang, 1997), and the mixture Rasch model (Mislevy & Verhelst, 1990; Rost, 1990). It is shown that the between-item multidimensional model is formally equivalent with a continuous mixture of Rasch models for which, within each class of the mixture, the item parameters are equal to the item parameters of the multidimensional model up to a shift parameter that is specific for the dimension an item belongs to in the multidimensional model. In a simulation study, the relation between both types of models also holds when the number of classes of the mixture is as small as two. The relation is illustrated with a study on verbal aggression. Frank Rijmen was supported by the Fund for Scientific Research Flanders (FWO). This research is also funded by the GOA/2000/02 granted from the KU Leuven. We would like to thank Kristof Vansteelandt for providing the data of the study on verbal aggression.     

Constant latent odds-ratios models and the mantel-haenszel null hypothesis

In the present paper, a new family of item response theory (IRT) models for dichotomous item scores is proposed. Two basic assumptions define the most general model of this family. The first assumption is local independence of the item scores given a unidimensional latent trait. The second assumption is that the odds-ratios for all item-pairs are constant functions of the latent trait. Since the latter assumption is characteristic of the whole family, the models are called constant latent odds-ratios (CLORs) models. One nonparametric special case and three parametric special cases of the general CLORs model are shown to be generalizations of the one-parameter logistic Rasch model. For all CLORs models, the total score (the unweighted sum of the item scores) is shown to be a sufficient statistic for the latent trait. In addition, conditions under the general CLORs model are studied for the investigation of differential item functioning (DIF) by means of the Mantel-Haenszel procedure. This research was supported by the Dutch Organization for Scientific Research (NWO), grant number 400-20-026.     

The epigenesis of stuttering

This paper examines the data on which the Demands and Capacities Model (DCM) is based with the purpose of identifying areas where future research might determine consilience among genetic influences at the physiological, behavioral, and cultural levels. The determination of consilience across different levels would tend to validate the genetic influence on stuttering, but more importantly it would also sharpen the focus of researchers interested in the various possible expressions that genetic influences might have and the way in which they influence the development of the disorder.

Educational objectives: The reader will (1) learn about the distinction, as outlined in the DCM, between environmental/contextual influences on stuttering development and intrinsic/genetic influences on stuttering development; (2) learn about the concept of consilience and its usefulness in conferring validity on parallel constructs at the physiological, behavioral, and cultural levels of stuttering theory; and (3) be able to identify potential areas for research that might help in refining our understanding of the genetic influences on stuttering development.     

A Commentary on 'Planning and Allocating: Strategies for Managing Priorities in Complex Jobs"

Due to their excessive drive to work hard, workaholics may face difficulties with recovering from work. The present study examines the role of negative emotions in recovery from work among a selected group of workaholics and nonworkaholics. Data were collected among 118 employees who completed a survey and participated in a 5-day diary study. Based on Effort-Recovery theory, we expected and found that negative emotions at the end of the workday hamper employees' recovery during the evening. Interestingly, this effect was stronger for workaholics than for nonworkaholics. It was also found that workaholics spend more time on work-related activities during the evening than nonworkaholics when feeling negative emotions at the end of the workday. Finally, it was expected and found that a lack of recovery experiences during the evening influences negative and positive emotions the next morning. Together, these findings suggest that, especially for workaholics, negative emotions play a crucial role in recovery from work. This insight may contribute to the design of interventions that stimulate recovery from work for workaholics.     

Research note: A motivational perspective on change processes and outcomes

A reengineering process in a chemical plant with technostructural and human-process-oriented interventions was analysed in order to develop and test a generalized expectancy?–?valence-theory model for participation in the change process and effective change. It was assumed that both supervisory support and favourable colleagues' change attitudes enhance one's change motivation, and participation in the change process, by increasing participation opportunities, and positive attitudes toward change. In turn, employee participation should have a positive impact on outcomes of the change process. After 2 years of restructuring, 104 employees participated in the evaluation of the change process. Path analyses revealed results that supported our model by and large. Employee participation in the change process predicts positive organizational effects. Favourable change attitudes as well as perceived participation opportunities, and supervisory support, which were integrated into one scale, predict the degree of employee participation. The latter also showed a direct path to organizational effects.     

‘Poor girl’: a case of active psychosis': clinical commentary

This paper presents the Clarkson Intervention Priority Sequencing Model for clarification and decision making in counselling, psychotherapy, supervision, consultancy As well as in the training and supervision of practitioners in these fields. The model can assist professionals to differentiate whether the focus for most urgent intervention in any part of the supervisory system primarily concerns areas of Danger, Confusion, Conflict, Deficit or Development and gives examples referring to health psychology and cultural diversity as well as providing some guidelines for application.