Anonymous wrote:In some cases, while the correlation between group tests and individual IQ tests is quite high for average scores, that correlation almost disappears for gifted scores. This means that an average child will score very similarly on a group IQ test and an individual IQ test, but a gifted child may not score similarly at all. There are small studies showing that group tests may even result in a negative correlation for some gifted children. This means that the more gifted the child, the lower the group ability test score! Read "Investigations of the Otis-Lennon School Ability Test to Predict WISC-R Full Scale IQ for Referred Children" by Anna H. Avant and Marcia R. O'Neal, University of Alabama, Nov. 1986, ED286883, for more details on this phenomenon.
Group ability tests include such tests as the Cognitive Abilities Test (CogAT), the Otis Lennon School-age Ability Tests (OLSAT).
Individual IQ tests tend to be more accurate for most of the population. These tests are often given to selected children, based on recommendation from a teacher, parent, or the child's scores on a group ability or achievement test. These are the tests commonly used to "identify" gifted children, for participation in school programs for the gifted
source: http://www.hoagiesgifted.org/why_test.htm
Anonymous wrote:In some cases, while the correlation between group tests and individual IQ tests is quite high for average scores, that correlation almost disappears for gifted scores. This means that an average child will score very similarly on a group IQ test and an individual IQ test, but a gifted child may not score similarly at all. There are small studies showing that group tests may even result in a negative correlation for some gifted children. This means that the more gifted the child, the lower the group ability test score! Read "Investigations of the Otis-Lennon School Ability Test to Predict WISC-R Full Scale IQ for Referred Children" by Anna H. Avant and Marcia R. O'Neal, University of Alabama, Nov. 1986, ED286883, for more details on this phenomenon.
Group ability tests include such tests as the Cognitive Abilities Test (CogAT), the Otis Lennon School-age Ability Tests (OLSAT).
Individual IQ tests tend to be more accurate for most of the population. These tests are often given to selected children, based on recommendation from a teacher, parent, or the child's scores on a group ability or achievement test. These are the tests commonly used to "identify" gifted children, for participation in school programs for the gifted
source: http://www.hoagiesgifted.org/why_test.htm
Anonymous wrote:In some cases, while the correlation between group tests and individual IQ tests is quite high for average scores, that correlation almost disappears for gifted scores. This means that an average child will score very similarly on a group IQ test and an individual IQ test, but a gifted child may not score similarly at all. There are small studies showing that group tests may even result in a negative correlation for some gifted children. This means that the more gifted the child, the lower the group ability test score! Read "Investigations of the Otis-Lennon School Ability Test to Predict WISC-R Full Scale IQ for Referred Children" by Anna H. Avant and Marcia R. O'Neal, University of Alabama, Nov. 1986, ED286883, for more details on this phenomenon.
Group ability tests include such tests as the Cognitive Abilities Test (CogAT), the Otis Lennon School-age Ability Tests (OLSAT).
Individual IQ tests tend to be more accurate for most of the population. These tests are often given to selected children, based on recommendation from a teacher, parent, or the child's scores on a group ability or achievement test. These are the tests commonly used to "identify" gifted children, for participation in school programs for the gifted
source: http://www.hoagiesgifted.org/why_test.htm
Anonymous wrote:With the WISC so much of an outlier, I'd wonder if the kid was prepped or what else happened to make the score so much higher. Why do you think it's an accurate reflection of your kid, rather than the other scores?