Nigel Thomas

The principal temptation toward substance dualisms, or otherwise incorporating a question begging homunculus into our psychologies, arises not from the problem of consciousness in general, nor from the problem of intentionality, but from the question of our awareness and understanding of our own mental contents, and the control of the deliberate, conscious thinking in which we employ them. Dennett has called this "Hume's problem". Cognitivist philosophers have generally either denied the experiential reality of thought, as did the Behaviorists, or have taken an implicitly epiphenomenalist stance, a form of dualism. Some sort of mental duality may indeed be required to meet this problem, but not one that is metaphysical or question begging. I argue that it can be solved in the light of Paivio's "Dual Coding" theory of mental representation. This theory, which is strikingly simple and intuitive (perhaps too much so to have caught the imagination of philosophers) has demonstrated impressive empirical power and scope. It posits two distinct systems of potentially conscious representations in the human mind: mental imagery and verbal representation (which is not to be confused with 'propositional' or "mentalese" representation). I defend, on conceptual grounds, Paivio's assertion of precisely two codes against interpretations which would either multiply image codes to match sense modes, or collapse the two, admittedly interacting, systems into one. On this basis I argue that the inference that a conscious agent would be needed to read such mental representations and to manipulate them in the light of their contents can be pre-empted by an account of how the two systems interact, each registering, affecting and being affected by developing associative processes within the other

The term schema (plural: schemata, or sometimes schemas) is widely used in cognitive psychology and the cognitive sciences generally to designate "psychological constructs that are postulated to account for the molar forms of human generic knowledge" (Brewer, 1999). The vagueness of this definition is no accident (and no sort of failing on Brewer's part). In fact schema is used in such very different ways by different cognitive theorists that the term has become quite notorious for its ambiguity (Miller, Polson, & Kintsch, 1984 p. 6). However, a concept of..

Traditionally ‘imagination’ primarily denotes the faculty of mental imagery, other usages being derivative. However, contemporary philosophers commonly hold it to be a polysemous term, with several unrelated senses. This effectively eliminates this culturally important concept as an appropriate explanandum for science, and paves the way for a thoroughgoing eliminative materialism. White challenges both these views of imagination, arguing that ‘imagine’ never means ‘suppose,’ ‘believe,’ ‘pretend’ or ‘visualize,’ that imagery may occur without imagination, and that the true sense of ‘imagine’ is ‘think of as possibly being so.’ I defend a version of the traditional view. The disseverance of imagination from imagery is motivated by an implicit version of the theory of mental images as pictures. Other contemporary scientific theories of imagery do not entail it. I defend a view of imagery as arising from the interpretative aspect of perception and connect this, and our contemporary concept of imagination, to the root Aristotelian concept of φαντασία.This captures the association between imagination and creativity, and reveals the coherence of the concept, more plausibly than White’s theory