Testing agile requirements models

This paper discusses a model-based approach to validate software requirements in agile development processes by simulation and in particular automated testing. The use of models as central development artifact needs to be added to the portfolio of software engineering techniques, to further increase efficiency and flexibility of the development beginning already early in the requirements definition phase. Testing requirements are some of the most important techniques to give feedback and to increase the quality of the result. Therefore testing of artifacts should be introduced as early as possible, even in the requirements definition phase.     

New perspectives for the evaluation of training sessions in self-regulated learning: Time-series analyses of diary data

The present study combines a standardized diary approach with time-series analysis methods to investigate the process of self-regulated learning. Based on a process-focused adaptation of Zimmerman’s (2000) learning model, an intervention (consisting of four weekly training sessions) to increase self-regulated learning was developed. The diaries were applied to evaluate this intervention. A sample of 40 civil engineering students participated and 21 of them answered questions in standardized diaries over a five-week period. The effectiveness of the intervention was demonstrated using trend analyses that evinced significant improvements in self-regulatory behavior. In addition, interrupted time-series analyses and control group comparisons confirmed essential treatment effects. The results demonstrate the advantages of using standardized diaries to obtain ecologically valid data on daily learning.     

Effects of Art Education in Secondary Schools on Cultural Participation in Later Life

This paper reports on the effects of art education in secondary schools on the cultural participation of Dutch students 10–20 years after leaving school. We draw our conclusion from a sample survey among 1034 students from 31 schools, half of whom took art as a subject of examination. Art examination subjects were more often chosen by students who were already active in the arts, come from culturally active families, and who more often chose languages and other humanities in their examination package. However, in spite of their affiliation with art prior to choosing an examination package, training in the arts during secondary school was found to add to their participation in cultural activities ten to twenty years later. The effects are restricted to the same art discipline as the art lessons attended, and apply to both receptive [enjoying art of artists] and productive [producing art] cultural participation.     

Presumed Media Influences and Demands for Restrictions: Using Panel Data to Examine the Causal Direction

In line with theoretical approaches, such as the influence of presumed influence approach, many studies have shown that the stronger individuals perceive the media’s influence to be on others, the more the individuals demand restrictions on the media and its influence. However, these studies provided information only about the correlation between the two constructs and did not test the direction of their causal relationship. To close this research gap, a two-wave panel study among German citizens was conducted. The results show that, rather than being the other way around, it is the presumed strength of online media’s political influence on others that affects demands for restrictions. Moreover, the findings indicate that the presumed political influence of online media on others also affects the presumed reach of online media.     

Christian Education and the Image of the Pharisees

In this article the author presents ways in which one problem in intergroup relations may be handled by writers of Protestant church school materials. This is based on his intensive analysis of curriculum materials for their intergroup content in the Yale Intergroup Research Project.     

Insightful learning in the laboratory: Some experiences from 10 years of designing and using conceptual labs

This paper describes a series of projects on the design and implementation of ‘conceptual labs’ aimed at developing insightful learning, following work that began in 1994/1995. The main focus has been on courses in mechanics and electric circuit theory. The approach taken in designing these innovative curricula can be described as ‘design-based research’. A common feature in these learning environments is the use of technology as a tool to aid students’ inquiry. In addition, systematic variation, based on the theory of variation, has been introduced into the design of the assigned tasks. Results from conceptual inventories have demonstrated the success of conceptual labs. In the later projects, video recording was used to study students’ courses of action in labs. This paper describes how these studies have provided insights into conditions that are critical for learning and how these insights have helped the present author and his co-workers make further improvements to learning environments.     

Sport treiben ein Leben lang?

Current demographic development attracts the attention of the sports sciences to the determinants of sport participation among people in the second half of life. Due to various life experiences in this age cohort, the question arises as to how much sports experiences affect contemporary sport participation. Starting with research into the life course people had followed, persons aged over 50 years were interviewed retrospectively about their current and former participation in sporting activities. Results show that sport participation of many years’ standing in the first half of life in particular, as well as sport activities in young adulthood, has a positive affect on the course of sport participation in the second half of life. Furthermore, period and cohort effects indicate that sports commitment is moderately affected by the variables sex and social environment.