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Difficulties in defining intelligence
Evidence for genetic and environmental contributions to individual intelligence
Evidence for the role of environmental influences on intelligence is provided by studies that compare
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Introduction
Cognitive psychology refers to the scientific investigation of human mental faculties, i.e. perceiving, learning, remembering, reasoning, thinking, and understanding. From within this extensive subject appears the ongoing debate concerning human intelligence. One of the most elusive foci of cognitive psychology, due to difficulties with defining and measuring it, intelligence is nevertheless the most intriguing as psychologists the world round study and attempt to further our understanding of it. In recent years, discoveries have shed light on, with hindsight, a rather biased view on whether intelligence is determined solely by genetics or our environment. According to Eysenck, this is due mainly to larger and better selected samples, as well as technological advances within molecular genetics.
When determining the malleability of intelligence, one must first have a firm grasp of what, exactly, intelligence is. Most definitions reflect the psychometric approach (Gross), which deals with measuring differences in individuals through tests. These can be divided into those with a narrower view (Burt and Terman, in Gross), which is seen in the idea of general intelligence ‘g’ (Spearman, in Gross), and those with a somewhat broader definition, which generally attempt to include aspects beyond cognition (Binet and Wechsler, in Gross). Along with these are some who define intelligence not as a noun, but as an adjective, i.e. intelligent activity (Heim and Ryle, in Gross). This ongoing debate must be taken into account when investigating the malleability of intelligence, as IQ scores do not necessarily equate to actual intelligence, lending certain limitations to the references. In spite of these limitations, opponent...
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... Harmondsworth, Penguin. In Gross, 2001.
Rutter, M. (and the English and Romanian Adopteer (ERA) study team), 1998,
Developmental Catch-up, and Deficit Following Adoption After Severe Global Early Privation. Journal of Child Psychology & Psychiatry, 39(4), 465-476. In Gross, 2001
Ryle, G., 1949, The Concept of Mind, London, Hutchinson. In Gross, 2001.
Spearman, C., 1904, General Intelligence, Objectively Determined and Measured, American Journal of Psychology, 15, 201-293. In Gross 2001.
Sternberg, R.J., 1998, How Intelligent is Intelligent Testing?, Scientific American Presents: Exploring Intelligence, 9(4), 12-17.
Terman, L., 1921, In Symposium: Intelligence and its Measurement, Journal of Educational Psychology, 12, 127-133. In Gross, 2001.
Wechsler, D., 1944, 3rd edition, The Measurement of Adult Intelligence, Baltimore, Williams & Wilkins. In Gross, 2001.
General intelligence tends to relate to various degrees with each other (Cohen 2012). An example of this is that if an individual is good in math, they may also be good in spelling. In this weeks reading we reviewed several different models of measurement of intelligence. In regard to these theories and general intelligence (g), the theories are various but have commonality and overlap. The Spearman's two-factor theory is if a test has high correlation with other test than the measurement of g is highly saturated (Cohen, 2012). The greater the importance of g on a test, the better the test is believed to predict intelligence
The bioecological model of intelligence, introduced by Stephen Ceci, concentrates on the potential abilities, environmental influence and internal motivation. To perform well in an intelligent test a person must have the necessary abilities, be in a positive environment and be motivated (Comer et al.,
Loehlin, John C., Lindzey Gardner, and J.N. Spuhler. Race Differences in Intelligence. San Francisco: W.H. Freeman and Company, 1975.
interpreted as being caused by genetic or environmental differences among groups? A strong promoter of the belief that there is undoubtedly a racial difference in intelligence is Phillippe Rushton. As a professor of psychology, he argues that there is irrefutable scientific evidence of difference...
...osh, D.E., Dixon, F. Newton, J.H., & Youman, E. (2010). A Confirmatory Factor Analysis of The Stanford-Binet Intelligence Scales, Fifth Edition, With A High-Achieving Sample. Psychology in Schools, 47(10), 1071-1083.
Sternberg, R. J. (1985). Beyond IQ: A triarchic theory of intelligence. New York: Cambridge University Press.
Gardner’s Theory of Multiple Intelligence focuses more on how numerical expressions of human intelligence are not a full and accurate depiction of people’s abilities (McFarlane, 2011). He includes and describes eight intelligences that are based on skills and abilities that are valued within different cultures. The eight intelligences include visual-spatial (e.g. sailor navigating with no navigational systems), verbal-linguistic (e.g. poets, writers, orators, and communicators), bodily-kinesthetic (e.g. dancers, athletes, surgeons, craftspeople), logical-mathematical (e.g. mathematicians and logicians), interpersonal(e.g. salespeople, teachers, clinicians, politicians, and religious leaders), musical (e.g. musicians and
Most researchers believe that we are born with a certain intelligence or potential intelligence. They also believe that the intelligence we are born with is difficult to change. Psychologists use short-answer tests to assess one’s intelligence (Gardner papers). It was believed that intelligence was a single inherited thing. Human beings start out initially as a blank slate and could be trained to learn anything, provided that it was presented in an appropriate way (Multiple Intelligences and Education). Currently an “increasing number of researchers believe the opposite. Gardner defined intelligence as: “the ability to create an effective product or offer a service that is valued in culture; a set ...
Boddy., J. (1978). Brain systems and Psychological Concepts. Sutton Surrey. By John Wiley & Sons, Ltd.
The first mental tests designed to be used for mass, group testing were developed by psychologists for the U.S. Army in 1917-1918. The group tests were modeled after intelligence tests designed for individual use in one-on-one assessment. In developing the mental tests, the psychologists subscribed to the position that one could be quite intelligent, but illiterate or not proficient in the English language. Based on this reasoning, two major tests were developed, the Army Alpha for literate groups, and the Army Beta for illiterates, low literates or non-English speaking (Yerkes, 1921). Both tests were based on the theoretical position that intelligence was an inherited trait, and the assumption was made that native intelligence was being assessed.
The true nature of intelligence has been debated more intensely then ever over the last century. As the science of psychology has developed one of the biggest questions it had to answer concerned the nature of Intelligence. Some of the definitions that have been given for intelligence have been the ability to adjust to one’s environment. Of course by such a definition even a person who is generally considered to be dull can be regarded as being intelligent if he can take care of himself. Other definition is such as having the tendency to analyze things around yourself. However it can be argued that such behavior can lead to over-analyzing things and not reacting to one’s environment and dealing with it in an intelligent manner.
Shieber, S., 2004. The Turing Test: Verbal Behavior as the Hallmark of Intelligence, The MIT Press. Available at: http://acl.ldc.upenn.edu/J/J05/J05-3006.pdf
In a 1921 symposium entitled “Intelligence and Its Measurement”, psychiatrists were asked to define intelligence and their answers varied greatly. One described intelligence as “equivalent to the capacity to learn.” Other definitions included “the ability to adapt adequately to relatively new situations”, “the capacity to learn or profit from experience”, and “the knowledge that an individual possesses.” And one stated that there was no simple definition to the word because “intelligence involves two factors- the capacity for knowledge and knowledge possessed” (Sternberg & Detterman, 1986, p.39-40).
Furnham, A. 2001. Self-estimates of intelligence: culture and gender difference in self and other estimates of both general (g) and multiple intelligences. Personality and Individual Differences, 31, pp. 1381-1405.
Visser, B. A., Ashton, M. C., & Vernon, P. A. (2006). g and the measurement of multiple intelligences: A response to Gardner. Intelligence, 34(5), 507-510.