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A measure of intelligence may be considered as a measure of the individuals capacity to process information. There is a long held theory that there is a single measurable intelligence scale along which each individual can be assessed to derive an 'intelligence quotient'. As part of the recent Project on Human Potential of the Harvard Graduate School of Education, Howard Gardner has reviewed a considerable body of evidence which questions the validity of this theory (25). He argues that the tests do not measure what they purport to, and are valid only for a small Western middle-class minority. This raises the question as to whether the prevailing concept of what constitutes meaningful 'information' about any new mode of socio-economic organization is not subject to similar distortion.
Gardner proceeds to demonstrate that there is persuasive evidence for the existence of several relatively autonomous human intellectual competences which he calls 'human intelligences' or 'frames of mind'. The exact nature of and breadth of each intellectual 'frame' has not so far been satisfactorily established, nor has the precise number of such intelligences been determined. It is however possible to demonstrate that several such intelligences exist, common to many cultures, each with its own patterns of development and brain activity, and each different in kind from the others. Gardner points out that the many previous efforts to establish independent intelligences have been unconvincing, chiefly because they rely on only one or, at the most, two lines of evidence.
Gardner presents evidence for the following distinct forms of intelligence:
Gardner stresses that different forms of intelligence may be more readily accepted in different cultures. Whilst at the same time recognizing that although the logico- mathematical form may predominate in the West (which claims to have originated it), it is nevertheless present in tribal cultures (such as the Kalahari Bushman) in somewhat disguised forms.
Within this context the notion of intelligence that he advances involves the existence of one or more information-processing operations or mechanisms which can deal with specific kinds of input. He suggests that human intelligence might be defined as a neural mechanism or computational system which is genetically programmed to be activated or 'triggered' by certain kinds of internally or externally presented information. (25, p. 64). The operations of these mechanisms may be considered autonomous, without the 'modules' being yoked together. He points out that exponents of this modular view do not react favourably to the notion of a central information-processing mechanism that decides which module to invoke (25, p.55).
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