For the previous 6 years before publication, Office of Naval Research (ONR) had been conducting a thematically oriented contract research program aimed, in large part, at developing the kind of broad theoretical framework necessary for a workable process interpretation of aptitude, learning, and performance. Originally published in 1980, the papers in this collection are generally addressed to three broad areas that were central to those interests of the ONR Personnel and Training Research Programs. One area is concerned with individual differences information processing, as revealed in simple laboratory or psychometric tests. The second area focuses on the structural aspects of learning and performance, using tools and concepts from semantic memory theory to describe what is learned and how it is learned. And the third area is aimed at the management of instruction: It addresses itself to the kinds of research and instructional designs required for effective implementation of adaptive instruction.

For the previous 6 years before publication, Office of Naval Research (ONR) had been conducting a thematically oriented contract research program aimed, in large part, at developing the kind of broad theoretical framework necessary for a workable process interpretation of aptitude, learning, and performance. Originally published in 1980, the papers in this collection are generally addressed to three broad areas that were central to those interests of the ONR Personnel and Training Research Programs. One area is concerned with individual differences information processing, as revealed in simple laboratory or psychometric tests. The second area focuses on the structural aspects of learning and performance, using tools and concepts from semantic memory theory to describe what is learned and how it is learned. And the third area is aimed at the management of instruction: It addresses itself to the kinds of research and instructional designs required for effective implementation of adaptive instruction.

For the previous 6 years before publication, Office of Naval Research (ONR) had been conducting a thematically oriented contract research program aimed, in large part, at developing the kind of broad theoretical framework necessary for a workable process interpretation of aptitude, learning, and performance. Originally published in 1980, the papers in this collection are generally addressed to three broad areas that were central to those interests of the ONR Personnel and Training Research Programs. One area is concerned with individual differences information processing, as revealed in simple laboratory or psychometric tests. The second area focuses on the structural aspects of learning and performance, using tools and concepts from semantic memory theory to describe what is learned and how it is learned. And the third area is aimed at the management of instruction: It addresses itself to the kinds of research and instructional designs required for effective implementation of adaptive instruction.

Henry O. Pollak Chairman of the International Program Committee Bell Laboratories Murray Hill, New Jersey, USA The Fourth International Congress on Mathematics Education was held in Berkeley, California, USA, August 10-16, 1980. Previous Congresses were held in Lyons in 1969, Exeter in 1972, and Karlsruhe in 1976. Attendance at Berkeley was about 1800 full and 500 associate members from about 90 countries; at least half of these come from outside of North America. About 450 persons participated in the program either as speakers or as presiders; approximately 40 percent of these came from the U.S. or Canada. There were four plenary addresses; they were delivered by Hans Freudenthal on major problems of mathematics education, Hermina Sinclair on the relationship between the learning of language and of mathematics, Seymour Papert on the computer as carrier of mathematical culture, and Hua Loo-Keng on popularising and applying mathematical methods. Gearge Polya was the honorary president of the Congress; illness prevented his planned attendence but he sent a brief presentation entitled, "Mathematics Improves the Mind". There was a full program of speakers, panelists, debates, miniconferences, and meetings of working and study groups. In addition, 18 major projects from around the world were invited to make presentations, and various groups representing special areas of concern had the opportunity to meet and to plan their future activities.

This edited volume represents state of the field research linking cognition and second language acquisition, reflecting the experience of the learner when engaged in noticing, input/output processing, retrieval, and even attrition of target forms. Contributions are both theoretical and practical, describing a variety of L1, L2 and L3 combinations from around the world as observed in spoken, written, and computer-mediated contexts. The book relates conditions of language, task, medium or environment to how learners make decisions about language, with discussions about the application or efficacy of these conditions on linguistic success and development, and pedagogical implications.

Transactional Distance and Adaptive Learning takes a fresh look at one of the pioneering educational theories that accommodates the impact of information and communications technologies in learning. The theory of transactional distance (TTD) provides a distinct analytical and planning foundation for educators to conduct an overarching inquiry into transitioning from mass instructional and management systems in higher education to dynamic and transformational futures that focus on each individual learner. Based on the TTD, this pragmatic approach offers instructors, administrators, students, and other stakeholders a comprehensive planning method to assess the current state of their instructional, learning, and management practices and to develop alternative models to prescribe future improvements in their institution. This complex, self-organized, and adaptive method includes current and emergent properties of: hardware, software, and telecommunications systems that allow faculty, students, and administrators to communicate; instructional and curriculum systems that provide teaching and learning environments for faculty and students; and management, societal, and global systems that influence how institutions are supported, funded, and managed.