Purpose: Designed for the testing of cognitive abilities.
Population: Ages 2 to 23.
Score: Scaled scores, area scores, and a Composite Score.
Time: (30-90) minutes.
Authors: R.L. Thorndike, E.P. Hagen, and J.M. Sattler.
Publisher: Riverside Publishing Co.
Description: A three-level hierarchical model was used to guide the construction of the Stanford-Binet Intelligence Scale: Fourth Edition (SB: FE). The model postulates (a) g (a general intelligence factor) at the highest level of interpretation; (b) crystallized, fluid, and short-term memory factors at the second level; and (c) more specific factors such as verbal reasoning, quantitative reasoning, and abstract visual reasoning-at the third level. The Composite Score reflects the highest level and is considered to be the best estimate of g in the scale.
Scoring: Raw scores are converted into three types of standard scores: standard age scores (or scaled scores) for the subtests (M=50, SD=8), area scores (M=100, SD=16), and a Composite Score (M=100, SD=16). The fifteen subtests include: Vocabulary, comprehension, Absurdities, Verbal Relations, Pattern Analysis, Copying, Matrices, Paper Folding and Cutting, Quantitative, Number Series, Equation Building, Bead Memory, Memory for Sentences, Memory for Digits, and Memory for Objects.
Reliability: The Composite Score of the SB: FE has excellent reliability. Internal consistency reliabilities for the Composite Score range from .95 to .99 over the 17 age groups. The median Composite Score reliability is .97. The median subtest reliabilities range from a low of .73 for Memory for Objects to a high of .94 for Paper Folding and Cutting. Subtest reliabilities differ somewhat according to age group, ranging from a low of .66 for Memory for Objects at age 10 years to a high of .96 for Pattern Analysis at ages 18-23.
Validity: The Technical Manual for the SB: FE presents, several studies investigating the Scale’s criterion validity. Comparisons were made with various other tests, including the Stanford-Binet: Form L-M, WISC-R, WPPSI, WAIS-R, and K-ABC, for both normal and exceptional populations. In the 13 studies reported in the manual, correlations between the SB: FE and these criterion measures ranged from a low of .27 to a high of .91 (Mdn r = .80). The median r of .80 supports the concurrent validity of the SB: FE.
Norms: The standardization sample consisted of 5,013 individuals in 17 age groups. The number of individuals ranged from 194 in the 18-0 to 23-11 age group to 460 in the 5-0 to 5-11 group. The sample was selected so as to be representative of the U.S. population according to 1980 census data. Stratification variables included geographic region, community size, ethnic group, age, gender, and socioeconomic status.
Suggested Uses: Designed for use in a educational, clinical, or research setting.