Wednesday, March 08, 2006

Cognitive psychology's contributions to psychomeric IQ theories - a MUST read

During the past year this blogmaster has made a number of posts related to research studies, articles, and musings re: the integration of psychometric and cognitive (information-processing) theory models [ note...there are too many to provide URL links...maybe at a later date when I have more time]. Unless one has had the time to read, study and integrate the vast body of literature that has been published re: the intersection of the psychometric and cognitive psychology research traditions, one is hard-pressed to provide a succinct and understandable overview of this body of literature. And, most of us don't have time to digest the various (and wonderful) edited texts that are available.

But that was yesterday.

This evening I stumbled across a wonderful/glorious synthesis article in the European Journal of Cognitive Psychology by C. Cornoldi, the editor of a special issue devoted to the contributions of cognitive psycholgoy to the study of intelligence. The complete reference is:
  • Cornoldi, C. (2006). The contribution of cognitive psychology to the study of human intelligence. European Journal of Cognitive Psychology, 18 (1), 1-17
Cornoldi provides a concise historical and comtemporary overview of psychometric theories of intelligence, appropriately emphasizing the work of Cattell-Horn and Jack Carroll. This overview of the psychometric models is alone worth reading the article. More importantly, Cornoldi then tackles, in broad strokes (which is what many of us need to make the leap; or to ascertain if we have been on the correct path in our own conceptual leaps), how cognitive psychology can address a serious problem with hierarchical psychometric theories (like CHC). Cornoldi states (italic font added by blogmaster):
  • "In particular hierarchical theories based on psychometric evidence pose one serious problem: It is not clear to which psychological processes the highest stratum or components correspond. Cognitive Psychology has isolated powerful cognitive mechanisms that appear to be critical predictors of high level intelligence and underlie different cognitive tasks. Reference to these mechanisms could help in the specification of the most central components of human intelligence."
Cornoldi then proceeds to summarize the cognitive psychology research that has been zeroing in on the contsructs of of working memory (Gsm-MW), processing speed (Gs), and executive explanatory mechanisms necessary to understand human intelligence and to allow for the integration of psychometric and information processing models. He also provides a coherent synthesis of various brain imaging studies and how they relate to all of this (e.g., the neural efficiency hypothesis).

I must say that this is one of the best overview articles I've read in a long time. I strongly recommend that all readers who are interested in theories of intelligence, and the development and interpretation of applied measures of intelligence, take time to read and study this article. I plan to reread it a number of times. Click here to view/read the article.....

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