Instead, he argued, each subtest depends both on g and on some other abilities that are specific to that particular subtest. Discuss vernons hierarchical theory of intelligence. Vernon description of different levels of intelligence may fill the gaps between two extreme theories, the twofactor theory. At the top of this hierarchy was spearmans general factor g, which accounted for the largest source of the variance inintelligence. Theories and issues 28 broader level, but still inspir ed by cognitive theory, stankov and crawford 1997 have been workin g on the concept of selfconfidence.
Contemporary hierarchical models of intelligence include the three stratum theory and the. This model suggests that intelligence is best conceptualized in a hierarchy of three strata. Nonhierarchical models suggested by thurstone and guilford. Vernon preferred factor analysis for research and applied this approach t o intelligenc e. Characteristics of people with regard to their intellectual activities and abilities indicate that the intelligence cannot be a single function or capacity. Vernons hierarchical theory of intelligence youtube. Spearman realized, however, that g is not the sole determinant of test performance e. Hierarchies of factor solutions in the intelligence domain. Factor theory of intelligence, which states that performance on an. Notes on factor theories and cognitive theories of intelligence.
Other technical details about the theory, including the hierarchical nature of the model, can be found in s. In the structure of human abilities 1950 vernon presented his hierarchical group factortheory of the structure of human intellectual abilities. Vernons theory is a compromise formula, between spearmans two factors and thurstones multifactor theory. In the structure of human abilities 1950 vernon presented his hierarchical group factor theory of the structure of human intellectual abilities. Vernon description of different levels of intelligence may fill thegaps between two extreme theories, the twofactor theory of spearman, which did not allow for the existence of group factors, and the multiplefactor theory of turstone, which did not allow a g factor. A theory of adaptive intelligence and its relation to general. Psychologists have attempted to analyze these components, which has resulted in the development of different theories.
At the top of his hierarchic al model was spearman s g and then there were two major group factors. Contemporary theories of intelligence scott barry kaufman. It retains g factor, and relegates thurstone s and guilfords structure of intellect to subordinate level. The g factor is a construct developed in psychometric investigations of cognitive abilities and. At the top of this hierarchy was spearmans general factor g, which accounted for the largest source of the variance in intelligence. Below g were several major, minor and specific group factors.