borderline intellectual development.mild intellectual disability.Question 141.5 / 1.5 ptsTraditional intelligence tests, such as those used in psychoeducational evaluations in schools, usually focus on which of Sternberg's aspects of intelligence?
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Question 161.5 / 1.5 ptsIf a person has significant limitations in both intellectual functioning and in adaptive behavior, this person is said toneed mainstreaming.have an intellectual disability.need psychoeducational evaluation.need Special Education.
IQ Classifications in Educational Use
Wechsler, David. Wechsler Adult Intelligence Scale-Third edition
Psychological Corporation, 1997
Classification | IQ Score | Percent Included | |
Theoretical Normal Curve | Actual Sample | ||
Very Superior | 130 and above | 2.2 | 2.1 |
Superior | 120-129 | 6.7 | 8.3 |
High Average* | 110-119 | 16.1 | 16.1 |
Average | 90-109 | 50.0 | 50.3 |
Low Average* | 80-89 | 16.1 | 14.8 |
Borderline | 70-79 | 6.7 | 6.5 |
Extremely Low* ** | 69 and below | 2.2 | 1.9 |
*The terms High Average, Low Average and Extremely Low correspond to the terms Bright Normal, Dull Normal and Mental Defective, respectively, used in the 1955 WAIS manual.
**The term Extremely Low is used in place of the terms Mentally Retarded, used in the WAIS-R, and Intellectually Deficient, used in the WISC-III to
avoid the implication that a very low IQ score is sufficient evidence by itself for the classification of "mental retardation" or "intellectually deficient."
IQ Classifications in Psychiatric Use
Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV)
American Psychiatric Association,
1994
V62.89 | Borderline Intellectual Functioning | IQ 71-84 |
317 | Mild Mental Retardation | IQ 50-55 to approximately 70 |
318.0 | Moderate Retardation | IQ 35-40 to 50-55 |
318.1 | Severe Mental Retardation | IQ 20-25 to 35-40 |
318.2 | Profound Mental Retardation | IQ below 20 or 25 |
The terms Educable Mentally Retarded and Trainable Mentally Retarded used in special education are roughly equivalent to DSM classifications for mild and moderate mental retardation, respectively. The DSM diagnostic criteria further require an assessment and determination of impairment in adaptive functioning in order to make a diagnosis of mental retardation.
IQ Classifications No Longer in Use
Terman, Lewis M. The Measurement of Intelligence. Houghton Mifflin Company, 1916
An explanation of and complete guide for the use of the Stanford Revision
and extension of the Binet-Simon Intelligence Scale
140 and over | Genius or near genius |
120-140 | Very superior intelligence |
110-120 | Superior intelligence |
90-110 | Normal or average intelligence |
80-90 | Dullness |
70-80 | Borderline deficiency |
Below 70 | Definite feeble-mindedness |
Mental deficiency used to be divided into the following sub-classifications, but these labels began to be abused by the public and are now largely obsolete: Borderline Deficiency (IQ 70-80), Moron (IQ 50-69), Imbecile (IQ 20-49) and Idiot (below 20). Mental deficiency is now generally called mental retardation.