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Wechsler Intelligence Scale for Children
Transcript of Wechsler Intelligence Scale for Children
-There are 13 subtests (Information, similarities, arithmetic, vocabulary, comprehension, digit span, picture completion, coding, picture arrangement, block design, object assembly, symbol search, mazes) to the WISC and it taking 50-90 minutes to complete Cost:
The cost of IQ testing is $410. This includes administration of the test to your child, scoring of the test, and a written report specifying results and recommendations. Scoring Method:
-There are four main sections to the Wechsler Intelligence Scale for Children - Fourth Edition
-Verbal Comprehension Index
-Perceptual Reasoning Index
-Working Memory Index
-Processing Speed Index
-The scores from these four sections are added together to make the Full Scale IQ (FSIQ)
-Scores can also be compared across sections to find weaknesses in particular areas
-In general, an overall score of 100 is average, over 130 indicates high intelligence, and under 70 can indicate mental deficiency Reliability for WISC-IV:
-Internal consistency was measured using the split-half method and test-retest reliability
-Reliability was acceptable, ranging from .70 to .90 Validity for WISC-IV:
-Compared to other accepted tests, such as WISC-III, Children's Memory Scale, Gifted Rating Scale
-A group of children was given the test. Children who were diagnosed with a form of mental retardation generally scored lower on the test, while children who were labelled as gifted generally scored higher. The control group scored in between.
-In a test by the Texas Research Institute of Mental Sciences, Juveniles with violent records were given the WISC-IV, and were found to score differently than juveniles with non-violent offenses
-Thomas Oakland and Josette G. Harris examined groups of children taking the WISC-III and the WISC-IV(Spanish edition). The children were not native speakers of English, and they were examined to see what impact their test-taking habits had on their FSIQ. For the WISC-III, the children who had negative test-taking habits had notably lower FSIQs. In the case of the WISC-IV(Spanish edition), negative test behaviors only seemed to affect children aged 13-16.
-Typically, the WISC-IV is used to determine mental deficiencies or unusually high intelligence in children on a small scale. Popularity:
-most widely used intelligence test for children along with the stanford binet test.
-used mostly to find children who are in need of educational help. (special education)
-found to be a little better than stanford binet test in terms of scoring. the Wechsler test did grading against children of the same age not their actual age against mental age. Critique:
-The test gives a profile of the child's individual strengths. it is said that this test may not provide reliable information and should take the most general score. Strengths:
-has a good scoring method
-helps to understand a child's more specific needs
useful for understanding children's cognitive functioning.
-well standardized, provides reliable and valid estimates of general intelligence. Weaknesses:
-inconsistencies in scoring structure. What the total measure makes interpretations of certain scores difficult to understand.
-too many difficult questions Future Revisions:
-Need to eliminate the bias; Main ones towards girls.
-more a broad span of difficulty of questions.
(equal amount of easy and hard) THE END