Horn And Blankson Chapter 3 Summary

Horn and Blankson start off chapter 3 by urging the reader to recognize that due to limitations to the current theory of intelligence due to the limitations in current research methods. They go on to critize the current theory of intelligence, specifically the use of psychometric ‘g.’ The authors argue ‘g’ cannot explain the entirety of the positive manifold of cognitive ability tests due to the lack of evidence. Rather there have to be at least two broad common factors, which the authors argue are Gf and Gc as well as different forms of memory. It is suggested that that cognitive speed isn’t at the core of cognitive capability, but rather the ability to focus and maintain attention—which probably declines in adulthood. This decline of retrieving …show more content…
A history of the evolution of CHC is given, how it is the integration of Gf-Gc theory and the three stratum theory, as well as how the two theories were originally constructed. Carroll created an empirically based taxonomy of human cognitive abilities as coherently as possible in one framework. The use of this model is growing steadily in professional fields—especially those in intellectual assessment—but the growth has been slower in theoretical fields. The CHC model is still being formed, with no untimely hardening of the different categories in each stratum. The model should be thought of as a temporary placeholder that is always evolving due to new research. The authors then proceeded to define, discuss what constructs are more fundamental or have more data, arise controversies and questions, and proposed additions, deletions, and rearrangements for each of the CHC theory constructs. The chapter ended with a proposal to reorganize the CHC theory so it is easier to understand the now 16 broad abilities. This reorganization would be based on how the abilities broadly function as parameter of information