The work of English cybernetician Gordon Pask on learning styles and strategies is presented. An attempt is made to describe the basic ideas of Conversation Theory, Pask's general theory of cognition. The learning strategies "holism" and "serialism," and the more general learning styles "comprehension learning" and "operation learning" are derived from Conversation Theory. These strategies and styles are described, both operationally and in terms of constructs within the theory. It is argued that the theory, apart from generating hypotheses about learning and teaching, may function as an analytic tool in the study of educational practice. (Author/LC)