Individual Differences in Thinking: cognitive and neurophysiological perspectives

Abstract

This paper explores the neglected area of categories of individual difference in human cerebral function. During thinking and decision making, it is hypothesised that different people process the same information in different ways, using different areas of the brain. Recent work suggests that individuals can be categorised into a small number of consistent groups of thinking, or cognitive, style. The different ways of processing reflect two basic dimensions of cognitive style. A simple computer‐presented method of determining cognitive style has been developed.

It is probable that these styles have an underlying cerebral basis. The styles are likely to be related to cerebral orientation. The specialisation of one cerebral hemisphere for verbal function and the other for visuo‐spatial has been long established. Hemispheric specialisation has been associated with the right hemisphere being the location of the visuo‐spatial and the left the verbal function, although evidence for this has been sometimes conflicting. This is not surprising when attention has not been paid to individual differences in cognitive style, as subjects of different styles will use different processes when doing the same cognitive task. Individual differences in orientation have not been clearly linked to differences in cognitive style.

It is proposed that studies could usefully explore the cerebral basis of individual differences in cognitive style, by measuring EEG asymmetries of individuals of specific cognitive styles, during the performance of a range of cognitive tasks. It is proposed that this would identify the location of certain brain functions associated with the different processing underlying the styles. A subsidiary intention is to assess the effectiveness of digital EEG monitoring as a research tool in this context.