Costs and benefits of inter-departmental innovation collaboration

Inter-departmental innovation collaboration facilitates innovation performance. At the same time, it has been identified as a source of increased coordination costs. Using organizational information processing theory, this paper builds and tests hypotheses on the costs and benefits of innovation-related collaboration within firms. Based on a sample of 433 German manufacturing firms we show inter-departmental innovation collaboration to increase process innovation performance, but also to produce costs in terms of project delay and project termination. These costs, however, do not affect innovation performance at the firm level. This finding suggests firms to be well able to balance the costs and benefits of inter-departmental collaboration across their innovation project portfolio. Theoretical and managerial implications are discussed.     

动物的魔力

虽然器官移植在科学上还存在极大的障碍 ,但是将动物的器官用在人体上的器官移植被许多科学家认为是唯一的长期解决全球性人类的器官匮乏的办法 .玛格丽特·西蒙斯正在关注这方面的最新发展     

Student Teachers’ Team Teaching during Field Experiences: An Evaluation by their Mentors

Since collaboration within schools gains importance, teacher educators are looking for alternative models of field experience inspired by collaborative learning. Team teaching is such a model. This study explores two team teaching models (parallel and sequential teaching) by investigating the mentors' perspective. Semi-structured interviews were conducted in order to map their attitudes, the advantages and disadvantages they observe and the conditions for implementation. Results indicate that mentors adopt an open attitude toward team teaching. They observe advantages for all actors involved, especially for student teachers (e.g. support, professional growth) and learners (e.g. rich and varied lessons). The study corroborates the findings retrieved in the literature, enlarges and refines them, and gives a clearer view on the importance of each (dis)advantage.     

The Impact of Scaffolding and Student Achievement Levels in a Problem-based Learning Environment

This study examined how scaffolds and student achievement levels influence inquiry and performance in a problem-based learning environment. The scaffolds were embedded within a hypermedia program that placed students at the center of a problem in which they were trying to become the youngest person to fly around the world in a balloon. One-hundred and eleven seventh grade students enrolled in a science and technology course worked in collaborative groups for a duration of 3 weeks to complete a project that included designing a balloon and a travel plan. Student groups used one of three problem-based, hypermedia programs: (1) a no scaffolding condition that did not provide access to scaffolds, (2) a scaffolding optional condition that provided access to scaffolds, but gave students the choice of whether or not to use them, and (3) a scaffolding required condition required students to complete all available scaffolds. Results revealed that students in the scaffolding optional and scaffolding required conditions performed significantly better than students in the no scaffolding condition on one of the two components of the group project. Results also showed that student achievement levels were significantly related to individual posttest scores; higher-achieving students scored better on the posttest than lower-achieving students. In addition, analyses of group notebooks confirmed qualitative differences between students in the various conditions. Specifically, those in the scaffolding required condition produced more highly organized project notebooks containing a higher percentage of entries directly relevant to the problem. These findings suggest that scaffolds may enhance inquiry and performance, especially when students are required to access and use them.     

Observational,physiological, and self-report measures of children's anger: relations to reactive versus proactive aggression

The goal of this study was to examine the relations of reactive versus proactive aggression to children's anger, as assessed using observational, physiological, and self-report measures. Anger was hypothesized to be related to reactive aggression, but not to proactive aggression. Children (N = 272 second-grade boys and girls) participated in a procedure in which they lost a board game and prize to a confederate who cheated. Skin conductance reactivity and heart rate reactivity were measured throughout the procedure. Following the interaction, children viewed a videotape of the game and self-reported on their level of anger after each turn of the game. Observational coding of children's angry facial expressions and angry nonverbal behaviors was conducted. Reactive aggression, but not proactive aggression, was positively related to skin conductance reactivity and angry nonverbal behaviors, both at an aggregated level and in terms of rate of increase over the time span of the game.     

Day-to-day Variation in Autonomy-Supportive and Psychologically Controlling Parenting: The Role of Parents’ Daily Experiences of Need Satisfaction and Need Frustration

Objective. Autonomy-supportive and psychologically controlling parenting have been shown to relate to positive and negative developmental outcomes, respectively. Most research that addresses antecedents of these parenting constructs has focused on the predictive role of between-parent differences (e.g., personality). To gain insight in dynamics of within-parent changes in reported parenting, this study focused on daily fluctuations in reported autonomy-supportive and psychologically controlling parenting and examined the role of parents’ need satisfaction and need frustration in accounting for those fluctuations. Design. Mothers (M age = 45) and fathers (M age = 47) of 198 adolescents (M age = 15) participated in a 7-day diary study. Results. Multilevel modeling provided evidence for significant day-to-day variability in both parenting dimensions. Daily fluctuations in need satisfaction were related to daily fluctuations in reported autonomy-supportive parenting and daily fluctuations in need frustration were related to daily fluctuations in reported psychologically controlling parenting. These associations were not moderated by between-parent differences in those parenting dimensions. Conclusions. The findings provide evidence for the role of parents’ own needs-related experiences in their daily display of autonomy-supportive and psychologically controlling parenting.     

Explaining effects and side effects of school inspections: a path analysis

There are large differences between schools with regard to how they are affected by a school inspection. This study provides quantitative evidence about the extent to which perceived effects and side effects of an inspection are related to the inspection’s judgement on the school, to features of the inspection, and to school features. This study draws on quantitative data collected from 2,202 teachers in Flemish primary and secondary schools that had recently been inspected. Using path analysis, it investigates the existence and strength of relationships between the perceived effects and side effects of inspection, on the one hand, and the perceived inspection quality, the perceived school’s policy-making capacities, and the inspection judgement, on the other hand. The analysis reveals that most effects and several side effects are predominantly explained by the perceived inspection quality. Emotional side effects during inspection are best predicted by the school’s policy-making capacities.     

Understanding students' errors with Prolog unification

One of the mechanisms that a student of Prolog must learn to understand and to use is unification. Initially students have only a partial understanding of unification and therefore they are not able to fully understand the execution of a program. This paper shows that a considerable part of the errors that students make can be explained by an impaired version of the correct algorithm. The changes from the correct algorithm to the false algorithms can be justified by a psychologically plausible mechanism.     

Developmental experiences of child sexual abusers and rapists

OBJECTIVE: The aim of this study is to identify the distinct developmental experiences associated with child sexual abuse and rape. METHOD: For 269 sexual offenders (137 rapists and 132 child sexual abusers), developmental experiences were recorded from a behavioral checklist, a parental-bonding survey, and a sexual history questionnaire. Offender classification was obtained from official records and verified through polygraph examinations. RESULTS: Compared to rapists, child sexual abusers reported more frequent experiences of child sexual abuse (73%), early exposure to pornography (65% before age 10), an earlier onset of masturbation (60% before age 11), and sexual activities with animals (38%). In contrast to child sexual abusers, rapists reported more frequent experiences of physical abuse (68%), parental violence (78%), emotional abuse (70%), and cruelty to animals (68%). Both child sexual abusers and rapists (>93%) reported frequent exposure to violent media during their childhood. Most offenders (94%) described having insecure parental attachment bonds; 76% of rapists reported avoidant parental attachments and 62% of child sexual abusers reported anxious parental attachments. CONCLUSIONS: Findings from this study support the role of specific developmental experiences as etiological factors in differential sexual offending. Child sexual abusers' developmental histories were characterized by heightened sexuality; whereas rapists' childhood histories were more indicative of violence. These findings have implications for the treatment of sexual abusers and the prevention of sexual abuse. PRACTICE IMPLICATIONS: This study's findings suggest that sexual offenders have been socialized to satisfy human needs of intimacy and sexuality through maladaptive means, which implies that a risk management approach may not be sufficient treatment. Although risk models teach offenders skills to avoid high-risk situations, they fail to address the maladaptive strategies that they may have developed for satisfying needs. Instead, the focus of treatment should be to equip offenders with the knowledge, skills, and opportunities to achieve these needs in an acceptable manner. Thus, this model will provide these individuals with the opportunity to live a healthy life without sexual offending.