A Speeded Item Response Model with Gradual Process Change

An item response theory model for dealing with test speededness is proposed. The model consists of two random processes, a problem solving process and a random guessing process, with the random guessing gradually taking over from the problem solving process. The involved change point and change rate are considered random parameters in order to model examinee differences in both respects. The proposed model is evaluated on simulated data and in a case study. The research reported in this paper was supported by IAP P5/24 and GOA/2005/04, both awarded to Paul De Boeck and Iven Van Mechelen, and by IAP P6/03, awarded to Iven Van Mechelen. Yuri Goegebeur’s research was supported by a grant of the Danish Natural Science Research Council.     

Criterion‐Related Validity of Dutch Police‐Selection Measures and Differences Between Ethnic Groups

This study investigated the criterion‐related validity of cognitive ability as well as non‐cognitive ability measures and differences between ethnic majority (N=2365) and minority applicants (N=682) in Dutch police officer selection. Findings confirmed the relatively low predictive validity of cognitive ability generally found for police jobs. Previous research reported no differential prediction. The present study, however, found small but systematic evidence for differences in validity for the ethnic majority and minority group of both cognitive and non‐cognitive measures. For the minority group, training performance appeared to be mainly predicted by the cognitive ability test. For the majority group, cognitive ability showed very little predictive power. Non‐cognitive ability variables appeared to be somewhat more predictive in this group.     

Transfer as the productive use of acquired knowledge, skills, and motivations

Historically, the notion of transfer has been very controversial, conceptually as well as empirically. Therefore, there is an obvious need for further inquiry aimed at a better understanding of the processes underlying transfer. Taking into account the recent literature, this article defines transfer as the broad, productive, and supported use of acquired knowledge, skills, and motivations in new contexts and learning tasks. As an illustration, an intervention study is briefly discussed. This study shows the possibility of designing a powerful learning environment that yields transfer effects in accordance with this reconceptualized perspective on transfer.     

A comparison of Estonian,Swedish, and Finnish mothers' controlling attitudes and behaviour

The current study examined maternal control of children across families with early adolescents from different sociocultural backgrounds. The intention was to find out whether belonging to the same ethnic group/language community (i.e., Estonian or Finnish) is more important for determination of child‐rearing attitudes and practices than sharing the immediate sociocultural context (i.e., Swedish society). In addition, attention was paid to the relationship between attitudes and behaviour. The results were obtained from three monocultural samples of Estonian, Swedish, and Finnish families living in their country of origin; two bicultural samples consisted of Estonian and Finnish families residing in Sweden. Two types of data—mothers' reported attitudes towards the importance of control over children's behaviour (the Control Scale) and video‐recorded real‐life verbal behaviour—were used to determine how the mothers' attitudes towards control relate to the behavioural control exhibited in their real‐life interactions. The study showed that the Finno‐Ugric mothers living in their countries of origin controlled their children's behaviour significantly more frequently than those Finno‐Ugric mothers who live in Sweden, but both Estonian samples outperformed Finns in their reported control attitudes. The Swedish mothers were the least directive among monocultural mothers both in maternal beliefs and in real‐life behaviour, but they differed from Estonian and Finnish mothers residing in Sweden only in their lower scores on the Control Scale. The study revealed that mothers' real‐life control behaviour corresponded rather modestly to their reported attitudes toward the importance of controlling children. Analyses of actual mother—child interaction showed that only the Estonian mothers living in Estonia actually put their relatively high scores on the Control Scale into practice in real‐life interactions with their children. Finally, some characteristics of Estonian, Finnish, and Swedish languages and cultures are discussed that might determine the cultural differences in child rearing that emerged.     

Intrusiveness of Minorities: Growing Pains for the Majority Group?1

In this paper, we examined the impact of the numerical representation and the intrusiveness of immigrants on feelings of group threat voiced by the majority. The present evaluation of group threat differs from previous studies in its inclusion of temporal comparisons. The relationship between feelings of threat and attitudes toward immigration was also evaluated. In all, 221 college students completed a questionnaire. As predicted, results obtained show that numerical representation was positively associated with feelings of group threat resulting from invidious social comparisons. Intrusiveness was positively related to feelings of group threat resulting from temporal comparisons. Contrary to hypotheses, the final model confirms that only feelings of temporal group threat were associated with negative attitudes toward immigration. Practical implications and the important role of temporal comparisons are discussed.     

Leader self-sacrifice and leadership effectiveness: The moderating role of leader self-confidence

The present research examined how self-sacrificial leadership predicts leadership effectiveness as a function of leader’s display of self-confidence. Results from a scenario experiment, a laboratory experiment, and a cross-sectional survey yielded consistent evidence that the effects of both leadership elements are stronger in conjunction than on their own. Moreover, the experimental studies also showed that the interactive effect on leadership effectiveness was mediated by collective identification. It is concluded that more research is needed focusing on the interactions between different leadership behaviors and the psychological processes underlying these effects.     

The Use of Personality Chiasms in Stereotype Research1

In this research, notions from research using personality chiasms (Hofstee & Arends, 1994) are combined with normative considerations on how stereotype research should be conducted (Judd & Park, 1993). On the one hand, this research seeks to improve on studies using personality chiasms that have ignored issues involved in establishing the accuracy of national or ethnic stereotypes (e.g., use of criterion ratings). On the other hand, this research goes beyond traditional stereotype research using personality traits in including neutral trait adjectives. The sample of this study consists of 159 Indigenous Fijians and 177 Indo‐Fijians. Hypotheses concerning the prevalence of stereotypical exaggeration, ethnocentrism, and insensitivity in Fiji are supported. Furthermore, outcomes of this research show that concerns about the effects of social desirability on stereotypical exaggeration are somewhat but not completely justified.     

The boston bio-bang: The emergence of a “Regional system of innovation”

In this article we will describe the emergence of a great number of small, regionally concentrated, innovative biotech companies. We see these organizations as “hosts” of concepts and ideas, greatly influencing their spreading over the sector. We have chosen an evolutionary perspective following individual companies in their struggle for survival, describing it as “obtaining food” and “fooling predators.” This struggle gives insight in the behavior of the biotech companies and related institutions as a “system of innovation.” One of our findings is that the variety of biotech companies is conditioned by their selection environment, but that this selection environment allows great variety and even encourage variety by keeping the companies small. Haiko Van der Voort is a research associate who lectures and publishes in a wide range of issues including precess management and system innovations. Martin De Jong is associate professor of public management.     

Argumentation Schemes in Persuasive Brochures

Many public information documents attempt to persuade the recipients that they should engage in or refrain from specific behaviour. This is based on the assumption that the recipient will decide about his or her behaviour on the basis of the information given and a rational evaluation of the pros and cons. An analysis of 20 public information brochures shows that the argumentation in persuasive brochures is often not marked as such. Argumentation is presented as factual information, and in many instances the task of making argumentational links and drawing conclusions is left to the reader. However, since the information offered does follow familiar argumentational schemes, readers can, in principle, reconstruct the argument. All the brochures make use of pragmatic argumentation (argumentation from consequences),i. e.,they formulate at least certain benefits of the desirable behaviour or disadvantages of the undesirable behaviour. In addition, they make regular use of argumentation from cause to effect and argumentation from example. Argumentation from rules and argumentation from authority are less frequently used. This empirical analysis of the use of argumentation schemes is a solid base for interesting and rich hypotheses about the cognitive processing of persuasive brochures. Central processing requires the reader to be able to reconstruct argumentation from informational texts and to identify and evaluate various types of argumentation.