Students’ Strategies for Writing Arguments from Online Sources of Information

This study builds on previous work on writing (e.g., Bereiter & Scardamalia, 1987; Hayes & Flower, 1980) and writing from sources (e.g., Spivey, 1997). Its purpose was to investigate processes and strategies for writing from online sources of information. High-achieving Grade 12 students were recorded as they researched on the Internet and wrote arguments about cosmetics testing on animals. Data included think aloud protocols, video recordings of participants and computer screens, writing products, and interviews. Data was analyzed using narrative summaries and cross-case comparisons. A coding scheme was developed and applied, in order to establish interrater reliability. Writers used one of three overall processes: 1) Writers alternated between researching online and structuring content into an outline, and then drafted a text; 2) Writers researched online, writing notes and a separate outline, and then drafted a text, drawing on both documents; 3) Writers drafted the text and their research while drafting. Each process was comprised of sub-ordinate strategies and operations. Two contributions of this work are discussed. First, the strategies of participants were similar in that they demonstrated translations between content and rhetorical problem spaces (cf. Bereiter & Scardamalia, 1987). These translations occurred during researching, as well as drafting and reviewing, and were apparent through students’ Internet activity. Second, participants constructed different task environments (cf. Hayes & Flower, 1980) and used different strategies; all were adapted to the affordances and constraints of the Internet, the electronic writing medium, and internal cognition. Final sections address writing instruction, the method, and future research

Computer education: new perspectives

Computer technologies were introduced into educational contexts over two decades ago and while there is some argument about the extent to which computers have realised their potential, they have undoubtedly had a significant impact on education. A look into any school will reveal computers being used widely by clerical staff, teachers and children. It is clear that computers are here to stay, but it is less clear as to how effectively they are being used in the learning process. Teachers not only need to use computers but they need to use them well, and in order to do this they must understand what computer technology can offer and the ways in which such technology can be used in teaching and learning

Knowledge restructing and the development of expertise in computer programming

This thesis reports a number of empirical studies exploring the development of expertise in computer programming. Experiments 1 and 2 are concerned with the way in which the possession of design experience can influence the perception and use of cues to various program structures. Experiment 3 examines how violations to standard conventions for constructing programs can affect the comprehension of expert, intermediate and novice subjects. Experiment 4 looks at the differences in strategy that are exhibited by subjects of varying skill level when constructing programs in different languages. Experiment 5 takes these ideas further to examine the temporal distribution of different forms of strategy during a program generation task. Experiment 6 provides evidence for salient cognitive structures derived from reaction time and error data in the context of a recognition task. Experiments 7 and 8 are concerned with the role of working memory in program generation and suggest that one aspect of expertise in the programming domain involves the acquisition of strategies for utilising display-based information. The final chapter attempts to bring these experimental findings together in terms of a model of knowledge organisation that stresses the importance of knowledge restructuring processes in the development of expertise. This is contrasted with existing models which have tended to place emphasis upon schemata acquisition and generalisation as the fundamental modes of learning associated with skill development. The work reported here suggests that a fine-grained restructuring of individual schemata takes places during the later stages of skill development. It is argued that those mechanisms currently thought to be associated with the development of expertise may not fully account for the strategic changes and the types of error typically found in the transition between novice, intermediate and expert problem solvers. This work has a number of implications for existing theories of skill acquisition. In particular, it questions the ability of such theories to account for subtle changes in the various manifestations of skilled performance that are associated with increasing expertise. Secondly, the work reported in this thesis attempts to show how specific forms of training might give rise to the knowledge restructuring process that is proposed. Finally, the thesis stresses the important role of display-based problem solving in complex tasks such as programming and highlights the role of programming language notation as a mediating factor in the development and acquisition of problem solving strategies