Willem A. Visser ‘t Hooft: The Future of Peace

This is an edited translation of an address given on 20 July 2017, the 73rd anniversary of the bomb plot against Adolf Hitler, at the Adam von Trott Foundation in Imshausen, Germany. It recalls the contacts of Willem A. Visser 't Hooft, the first general secretary of the World Council of Churches, with the German resistance during the Second World War, discusses the relevance of their vision of the post‐war future to contemporary politics, and highlights the significance of Visser 't Hooft for the ecumenical movement.     

Threat-related automatic associations in socially anxious adolescents

Threat-related automatic associations are assumed to play an important role in the development and maintenance of social anxiety. We tested whether threat-related automatic associations are already evident in high socially anxious adolescents, by comparing a group of adolescents (age 12–15) with subclinical levels of social anxiety (n = 170) to a group of low socially anxious adolescents (n = 193). We used a single-target implicit association test to measure threat-related automatic associations to social cues. Results showed that indeed in high socially anxious adolescents social cues automatically elicited relatively strong threat-related associations. Supporting the relevance of differentiating between automatic and more explicit measures, both automatic and explicit associations were independently associated with adolescents’ level of self-reported social anxiety. The present pattern of findings is not only consistent with the view that automatic and more deliberate threat-related associations are both involved in the etiology of social-anxiety symptoms, but also suggest that both types of associations are proper targets for early intervention programs.     

Behavioral Inhibition and Attentional Control in Adolescents: Robust Relationships with Anxiety and Depression

Behavioral inhibition (BI) has been associated with the development of internalizing disorders in children and adolescents. It has further been shown that attentional control (AC) is negatively associated with internalizing problems. The combination of high BI and low AC may particularly lead to elevated symptomatology of internalizing behavior. This study broadens existing knowledge by investigating the additive and interacting effects of BI and AC on the various DSM-IV based internalizing dimensions. A sample of non-clinical adolescents (N = 1806, age M = 13.6 years), completed the Behavioral Inhibition System/Behavioral Activation System Scales (BIS/BAS), the attentional control subscale of the Adult Temperament Questionnaire (ATQ) and the Revised Child Anxiety and Depression Scale (RCADS). As expected, BI was positively, and AC was negatively related to internalizing dimensions, with stronger associations of BI than of AC with anxiety symptoms, and a stronger association of AC than of BI with depressive symptoms. AC moderated the association between BI and all measured internalizing dimensions (i.e., symptoms of generalized anxiety disorder, social phobia, separation anxiety disorder, panic disorder, obsessive–compulsive disorder, and major depressive disorder). Since high AC may reduce the impact of high BI on the generation of internalizing symptoms, an intervention focused on changing AC may have potential for prevention and treatment of internalizing disorders.     

Dopamine transporter gene moderates response to behavioral parent training in children with ADHD: a pilot study

There is great variability in the degree to which children with attention deficit/hyperactivity disorder (ADHD) improve through behavioral treatments. This study investigates the influence of the dopamine transporter gene (SCL6A3/DAT1) on outcome of behavioral parent training (BPT). Study subjects were a subsample (n = 50, for whom DAT1 genotypes were available) of a randomized controlled BPT effectiveness study (N = 94) comparing BPT plus ongoing routine clinical care (RCC) versus RCC alone in referred children (4-12 years old) with ADHD. Treatment outcome was based on parent-reported ADHD symptoms and behavioral problems. Presence of 2 versus no or 1 DAT1 10-repeat allele served as moderator variable. Time × Treatment × Genotype effect was analyzed with repeated-measures analysis of variance, controlling for baseline medication status. Results indicate that DAT1 moderated treatment response (p = .009). In children with no or 1 DAT1 10-repeat allele, superior treatment effects of BPT + RCC compared with RCC alone were present (p = .005), which was not the case in children with 2 DAT1 10-repeat alleles (p = .57). Our findings suggest that genetic differences in DAT1 in children with ADHD influence their susceptibility to a behavioral intervention directed at shaping their environment through their parents. The role of the dopamine system in motivation and learning and in the aberrant sensitivity to reinforcement in children with ADHD may explain this moderating effect, given that the management of contingencies is typically addressed in BPT.     

Dynamics of psychological contracts with work engagement and turnover intention: The influence of organizational tenure

This study investigated the interrelations of the psychological contract with work engagement and turnover intention, which has hitherto been a largely overlooked topic in psychological contract research. Although previous research has mainly focused on how psychological contracts influence job attitudes and behaviours, it is proposed here that attitudes and behaviours also affect the psychological contract that the employee has with the organization. Moreover, it is proposed that because reciprocity norms are more important among shortly tenured employees, mutual relationships between psychological contracts and work engagement and turnover intention were stronger for employees with lower organizational tenure. Longitudinal data were collected among 240 employees and proposed models were evaluated with structural equation modelling. The results show that indeed psychological contract fulfilment was longitudinally related to higher work engagement and lower turnover intentions, but only for employees with low tenure. Moreover, stability in work engagement, turnover intention, and psychological contract over time was higher for those with high tenure, whereas the relations between turnover intention and the psychological contract were stronger for those with low organizational tenure. These findings demonstrate that psychological contracts are reciprocally interrelated with work outcomes, and that such relations are stronger for those with low tenure.     

Salivation discordant with hunger.

In the present study, the authors tested whether an increase in salivation is associated with an increase in subjectively experienced hunger. After conditioning, subjects showed a significant increase in salivation flow. Hunger levels, however, were significantly decreased after conditioning. No correlation was found between salivation flow and hunger levels. It is argued that salivation responses and subjectively experienced hunger are loosely coupled systems. Salivation flow reflects the learning history of a subject which may sometimes be paralleled by a biological state which is called hunger, whereas, at other times, hunger may be absent. The authors conclude that conditioning of preparatory responses such as salivation depends on the probability relationship between exposure to cues (CSs) and food intake (US), as well as the intensity of the US.     

Design research programs and the logic of their development

Design research programs attempt to bring together the properties of available materials and the demands derived from intended applications. The logic of problem states and state transitions in such programs, including assessment criteria and heuristic principles, is described in settheoretic terms, starting with a naive model comprising an intended profile and the operational profile of a prototype. In a first concretization the useful distinction between structural and functional properties is built into the model. In two further concretizations the inclusion of potential applications is motivated and described for the case of drug research as well as the inclusion of potential realizations for the case of complex products. Next, another line of concretization of the naive model, the incorporation of potentially relevant properties, is sketched. Then the partial analogy between product- and truth-approximation is indicated. We conclude with some remarks about the usefulness of our models for products reaching the market in comparison to the the so-called social construction of technology approach.     

Understanding the factors that promote employability orientation: The impact of employability culture,career satisfaction,and role breadth self‐efficacy

This study among 702 Dutch employees working in the health care and welfare sector examined individual and organizational factors that are related to workers' employability orientation and turnover intention. Additionally, push and pull motives were examined of employees who aimed to leave their job. Results indicated that a strong employability culture adds extra variance over and above individual factors such as career satisfaction and role breadth self‐efficacy in the explanation of employability orientation, turnover intention, and push motives of employees who aim to leave their job. That is, employability culture is positively related to employability orientation, but negatively related to turnover intention and to push motives of those who aim to leave. Pull motives of employees who want to leave are explained by individual factors only, such as career dissatisfaction and role breadth self‐efficacy, but not by employability culture. These findings suggest that organizations that need to adapt to changing environments should implement a strong employability culture, because such a culture stimulates employability orientations among their employees while simultaneously decreasing turnover intentions.     

Neural coding of reward magnitude in the orbitofrontal cortex of the rat during a five-odor olfactory discrimination task

The orbitofrontal cortex (OBFc) has been suggested to code the motivational value of environmental stimuli and to use this information for the flexible guidance of goal-directed behavior. To examine whether information regarding reward prediction is quantitatively represented in the rat OBFc, neural activity was recorded during an olfactory discrimination “go”/“no-go” task in which five different odor stimuli were predictive for various amounts of reward or an aversive reinforcer. Neural correlates related to both actual and expected reward magnitude were observed. Responses related to reward expectation occurred during the execution of the behavioral response toward the reward site and within a waiting period prior to reinforcement delivery. About one-half of these neurons demonstrated differential firing toward the different reward sizes. These data provide new and strong evidence that reward expectancy, regardless of reward magnitude, is coded by neurons of the rat OBFc, and are indicative for representation of quantitative information concerning expected reward. Moreover, neural correlates of reward expectancy appear to be distributed across both motor and nonmotor phases of the task.