The visual discrimination of bending

The sensitivity of observers to nonrigid bending was evaluated in two experiments. In both experiments, observers were required to discriminate on any given trial which of two bending rods was more elastic. In experiment 1, both rods bent within the same oriented plane, and bent either in a frontoparallel plane or bent in depth. In experiment 2, the two rods within any given trial bent in different, randomly chosen orientations in depth. The results of both experiments revealed that human observers are sensitive to, and can reliably detect, relatively small differences in bending (the average Weber fraction across experiments 1 and 2 was 9.0%). The performance of the human observers was compared to that of models that based their elasticity judgments upon either static projected curvature or mean and maximal projected speed. Despite the fact that all of the observers reported compelling 3-D perceptions of bending in depth, their judgments were both qualitatively and quantitatively consistent with the performance of the models. This similarity suggests that relatively straightforward information about the elasticity of simple bending objects is available in projected retinal images.     

Psychometric intelligence dissociates implicit and explicit learning

The hypothesis that performance on implicit learning tasks is unrelated to psychometric intelligence was examined in a sample of 605 German pupils. Performance in artificial grammar learning, process control, and serial learning did not correlate with various measures of intelligence when participants were given standard implicit instructions. Under an explicit rule discovery instruction, however, a significant relationship between performance on the learning tasks and intelligence appeared. This finding provides support for Reber's hypothesis that implicit learning, in contrast to explicit learning, is independent of intelligence, and confirms thereby the distinction between the 2 modes of learning. However, because there were virtually no correlations among the 3 learning tasks, the assumption of a unitary ability of implicit learning was not supported.     

Migrant mental health: a model for indicators of mental health and health care consumption.

OBJECTIVE: This study explores the relationship between mental health and health care consumption among migrants in the Netherlands. DESIGN: Samples of the Turkish (n = 648), Moroccan (n = 102), and Surinamese (n = 311) populations in Amsterdam were examined. The study tested a hypothesized model of risk factors for psychiatric morbidity, indicators of well-being, and indicators of health care consumption. The model was specified on the basis of information from earlier research on the sample and literature on the topic. The model was tested and refined using structural equation modeling. MAIN OUTCOME MEASURES: Psychiatric morbidity and well-being measures were assessed with the CIDI 1.1 and MOS-sf-36 subscales, respectively. Health care consumption was assessed by the question "Have you ever consulted one or more of these professionals or health care facilities with respect to mental health problems or problems related to alcohol or drugs usage?" RESULTS: The primary result of this study was the confirmation that health care consumption among migrants is predicted by need and predisposition factors, such as health condition and sociodemographic characteristics. In addition, mental health care consumption of migrants is predicted by acculturation characteristics. This result suggests an effect of cultural and migrant-specific factors in help-seeking behavior and barriers to mental health care facilities. CONCLUSIONS: Findings confirm the existence of migrant-specific mechanisms in health care consumption. Mental health care professionals should be aware of these. However, ignoring common ground for interventions unnecessarily creates distance between migrant groups and between migrant and indigenous Dutch groups.     

Action monitoring and perfectionism in anorexia nervosa

To study action monitoring in anorexia nervosa, behavioral and EEG measures were obtained in underweight anorexia nervosa patients (n=17) and matched healthy controls (n=19) while performing a speeded choice-reaction task. Our main measures of interest were questionnaire outcomes, reaction times, error rates, and the error-related negativity ERP component. Questionnaire and behavioral results indicated increased perfectionism in patients with anorexia nervosa. In line with their perfectionism and controlled response style patients made significantly less errors than controls. However, when controlling for this difference in error rates, the EEG results demonstrated a reduced error-related negativity in the patient group. These seemingly contradictory outcomes of improved performance and reduced error monitoring are discussed in relation with indications of anterior cingulate cortex hypoactivity in anorexia nervosa patients.     

The Prediction of Worry in Non-Clinical Individuals: The Role of Intolerance of Uncertainty,Meta-Worry,and Neuroticism

The present study investigated the relation between intolerance of uncertainty (IU), meta-worry, and neuroticism on the one hand, and worry on the other hand, in a sample of 105 university students. Two different operationalizations of worry were used: trait worry and idiosyncratic worry. Results showed that IU, meta-worry, and neuroticism correlated significantly with trait worry. Further, IU and meta-worry were strongly related but made a unique and independent contribution to trait worry. Finally, IU and meta-worry could be considered as partial mediators of the relation between neuroticism and trait-like worry. Relations of IU, meta-worry, and neuroticism with idiosyncratic worry were weak or even absent, although neuroticism was associated with idiosyncratic worry when the stressful event was more imminent. In conclusion, not IU and meta-worry, but the general vulnerability factor of neuroticism appeared to possess the most declarative value in relation to both trait and idiosyncratic worry.     

Transferring the technology,policy, and management concept from the Netherlands to China

The literature on policy transfer between countries and organization has seen rapid growth. Whether framed in terms of policy transfer, institutional transplantation, imitation and emulation or copying policy models and ideas, a sizeable number of determinants for success have been identified to understand why such conceptual or institutional transfers grow out to become successes or failures in their countries or organizations of adoption. What is much less common is to describe such a process through the lens of participants inside this transfer. This paper is an attempt to do just that. It will tell the story of the higher-educational concept of Technology, Policy and Management from Delft University of Technology in the Netherlands to Harbin Institute of Technology in China, studied by means of participatory observation. The keys and clues for successful transplantation from the literature will subsequently be compared with the experiences from this case, and additional lessons, some of which are specific to Western-Chinese mutual learning, are formulated. Martin de Jong is associate professor of policy, organization and management at the Faculty of Technology, Policy and Management of Delft University of Technology, the Netherlands. He publishes and lectures mainly on subjects of cross-national policy transfer, cross-cultural management and transport infrastructure policy. He is also responsible for the international master program Engineering and Policy Analysis, for which he has helped to set up a Chinese counterpart with the same name. Xi Bao is professor of public management and real estate management at the School of Management and the National Centre of Technology, Policy and Management of Harbin Institute of Technology, People’s Republic of China. He is also a co-director of the National Centre of TPM in China and lectures and publishes mainly on real estate management and infrastructure policy.     

Thinking while talking: adults fail nonverbal false-belief reasoning

This experiment tested the ability of 81 adult subjects to make a decision on a simple nonverbal false-belief reasoning task while concurrently either shadowing prerecorded spoken dialogue or tapping along with a rhythmic shadowing track. Our results showed that the verbal task, but not tapping, significantly disrupted false-belief reasoning, suggesting that language plays a key role in working theory of mind in adults, even when the false-belief reasoning is nonverbal.     

Adjustment problems in the family and school contexts, attitude towards authority, and violent behavior at school in adolescence

This study analyzed the role of different but interrelated variables in the family and school contexts in relation to problems of violent behavior at school during adolescence. Participants were 1,068 students aged 11 to 16 (47% male) drawn from secondary schools in the Valencian Community (Spain). Statistical analyses were carried out using structural equation modeling. The model accounted for 32% of the variance in school violence. Results showed a direct association between quality of communication with father and teacher's expectations of the student with the adolescent's involvement in violent behavior at school. Moreover, findings showed indirect paths by which adolescents' self-concept (family and school domains), acceptance by peers, and attitude toward authority, seemed to be influenced by the quality of interactions with parent and teachers, and also were closely associated with violent behavior at school. Findings are discussed in relation to previous research on adolescent psychosocial adjustment and behavioral problems at school.