Six Theories of Intelligence Psychometric Approach Gardner (1983) Steinbeg (1985) Piaget (1972) Theory There is one "g factor" that accounts for intelligence There are multiple intelligences and no "g factor" Tests Testability Criticism Intelligence tests come in many forms, (Ex. Wechler, Subjects tend to do better on It is impossible to reduce Stanford‐Binet, IQ). The data is re‐standardized to a mean some types of questions. However all the factors of of 100 with a standard deviation of 15. The tests measure the subsets of questions are intelligence and special scholastic aptitude, school achievement, special abilities, generally positively correlated. abilities to an indefinable etc. with questions and performance exams testing familiar The tests are correlated by factor "g" linguistics, logical‐mathematics, and spatial abilities. analysis. "Normal" adults and children as Critics say Gardner includes He includes musical, bodily‐kinaesthetic and various forms well as gifted persons and those some "special talents" in of personal intelligence to accompany what psychometric with brain damage have been his studies that cannot be tests examine. There are no paper and pencil tests tested to discover other factors to considered a form of intelligence intelligence. Analytic intelligence is measured by mainstream He developed three aspects of intelligence: "academic" tests. Creative intelligence is measured by and analytic, creative and practical (tacit performance exams. Practical intelligence is measured by knowledge, action‐oriented and acquired by questionnaires that give scenarios and ask a person to the self for personal satisfaction). choose how to handle the situation. The three subsets explain why handicappers ability is generally higher than its correlation to IQ and why school performance varies from psychometric test scores. Piaget proposed a developmentally based To assess understanding of conservation (material quantity model of intelligence. In all children, not changed by change of shape) a child will watch water intelligence develops from a continually being poured from a small container to a tall one and asked shifting balance between bringing new if the large container has less water in it. information into existing structures The test must be modified to individuals. The test correlates well to psychometric tests. The results are weak if tests are individualized Vygotsky (1978) Because traditional psychometric tests ignore the "zone of Believes all intellectual abilities lie in social proximal development" (the level of performance a child Twin and adoptive studies origin. Language and thought, learned by It is very difficult to determine the would reach with appropriate help from supportive have defeated Vygotsky's parents, begins the development process parents) Vygotsky's tests are dynamic. The tests give some hypothetical absolutism which is continued by teachers and mentors. idea of a child's potential instead of only testing the "static" (already developed) intelligence. Biological Approach Aspects of brain anatomy and physiology may relate to intelligence. Examples include The brain is studied and measured using PET's and MRI's to the arborisation of cortal neurons, cerebral Much of the workings of the brain understand differences among humans that may account are still a mystery glucose metabolism, evoked potentials, for differences in intelligence. nerve conduction velocity (NCV), and sex hormones. Neisser, U., Boodoo, G., Bouchard,T.J., Jr., Boykin, A. W., Brody, N., Ceci, S. J., Halpern, D. F., Loehlin, J. C., Perloff, R., Sternberg, R. J., G Urbina, & Urbina, S. (1996). Intelligence: Knowns and unknowns. American Psychologist, 51, 77‐107.