British psychologist (1928–1996)
Andrew Gordon Speedie Pask (June 28, 1928 – March 29, 1996) was an English cybernetician and psychologist who made significant contributions to cybernetics, instructional psychology, experimental epistemology and educational technology.
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Conversation Theory is a summarization of our assumptions and rationale from this early period. Conversations are behaviors, but special kinds of behaviors with hard-valued observables in the form of concept sharings, detected as "understandings." Conversations are, we believe, the first basic data of psychological, social, or educational theory. We see later that people can even have conversations with themselves. Conversations which may lead to concept sharing need not be verbal. Often they are gestural, pictorial, or mediated through a computer interface.
A computer that issues a rate demand for nil dollars and nil cents (and a notice to appear in court if you do not pay immediately) is not a maverick machine. It is a respectable and badly programmed computer... Mavericks are machines that embody theoretical principles or technical inventions which deviate from the mainstream of computer development, but are nevertheless of value.
We now come to the underpinning contention of the previous monograph. Psychological phenomena, especially those involved in learning and education, stem from or are related to states of consciousness. Using the argument which relates the information available about conscious processes to the type of experimental situation, we maintain that the basic unit of psychological /educational observation is a conversation. In order to test hypotheses and explicate the conversational transactions, it is necessary to invoke various tools and explanatory constructs. These are coherent enough to count when interlocked as a theory, and this theory was dubbed conversation theory.
The' holist/serialist' distinction (Daniel, 1975; Pask and Scott, 1971, 1972) is an example of different learning strategies, rather than the more generally exhibited learning style. The holist or serialist strategies are exhibited in a , strict conversation,' and are thus insufficiently refined to account for learning in general. Holism and serialism appear to be extreme manifestations of more fundamental processes, which are induced by systematic enforcement of the requirement for understanding which is as strong as, or stronger than, the requirement for' deep-level' processing.
An earlier paper (Pask, 1976) introduced conversational techniques, some involving a human participant in dialogue with a student, others involving a mechanically or computer implemented 'participant' through which the student 'talks to himself' under restrictions imposed by the device. In either case (human or mechanical monitoring) the subject matter of a conversation is represented in a liberally conceived, but standard, fashion, as a conversational domain consisting in an entailment structure (embodying one or more description schemes and indicating the many ways in which one topic may be known in terms of or derived from others) and behaviour graphs (one for each topic in the domain) that prescribe what may be done to model or explain the topic in question. Within this framework, the conversational techniques secure, or approximate, a standard condition for experiments on learning.
A learning strategy is comparable in kind with a performance strategy. Each sort of strategy entails decomposing goals into subgoals and applying mental subroutines to achieve the subgoals concerned. The necessary difference between learning strategies and performance is in the domain upon which they operate. Whereas the performance strategy solves problems posed by states of the (usually symbolic) environment, the learning strategy solves the problems posed by deficiencies in the current repertoire of relevant performance strategies; the solutions produced by a learning strategy are performance strategies.
Given a realistically sized task (and assuming that he cannot already perform it), a student is unable to generate the required performance strategy all at once. Instead, he directs his attention to various facets or subtasks and musters subroutines that build up a performance strategy bit by bit. The process is carried out by a learning strategy which, in the free learning subject, may be innate or acquired and which, for the student, is imposed externally by a teacher or learning system.
There is a theory of learning and teaching together and that is all. Results from many studies support this point of view as, also, does the evidence of commonsense. So, to be dogmatic (but with confidence) learning implies teaching and teaching implies learning. Sometimes the teacher and learner responsible for th joint process are obvious (a student at a desk and another person wearing an academic cap and gown). Sometimes, the teacher and learner are not so obviously distinct and turn out to be unexpected but, once-indicated, intuitively plausible entities.
Holists are distinguished from serialists in terms of the number of inferential statements they produce... It is possible to distinguish the serialist from the holist by a tendency, on the part of a serialist, to preserve the order of the programme presentation format which is absent in the holist. Presented with a holist programme the serialist is unable to preserve the complete order but he does manage to preserve sequentially arranged fragments.
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