1 / 11

Stanford-Binet IV

Stanford-Binet IV. Description: Point-scale (contrast with age-scale of previous editions) Test composite (M=100, SD=16) 4 areas & scores (M=100, SD=16) 15 subtests (M=50, SD=8). Stanford-Binet IV Psychometrics. Standardization sample 5013 subjects

amadahy
Télécharger la présentation

Stanford-Binet IV

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Stanford-Binet IV • Description: • Point-scale (contrast with age-scale of previous editions) • Test composite (M=100, SD=16) • 4 areas & scores (M=100, SD=16) • 15 subtests (M=50, SD=8)

  2. Stanford-Binet IV Psychometrics • Standardization sample • 5013 subjects • overrepresentation of upper social class & college-educated parents • Weighted norms • Reliability • Subtests: .80s to .90s range • Internal consistency of Composite: .95 to .99

  3. SB IV Psychometrics (cont.) • Validity • Criterion-related validity: median of .70; ranges from .21 to .90 depending on range of abilities in specific sample and criterion instrument used • Construct: Factor analysis • Support for general ability factor (g) • Verbal ability consistently supported • Other factors not consistently supported at all age levels

  4. SB IV Administration • Adaptive testing: testing tailored to individual test taker • Use of Vocabulary as “Routing” test • Basal & Ceiling

  5. Evaluation • Reliable & valid measure of overall intelligence • Strengths: • Large standardization sample • Efforts to eliminate bias • Weaknesses • Overrepresentation of upper class in norms • Not supported by factor analysis at all ages

  6. Wechsler Scales Through the Years

  7. Wechsler Scales • 3 versions: WAIS III(16-89); WISC III(6-16); WPPSI (3-7) • Commonalities: • Verbal & Performance Scales + Full Scale (M=100, SD=15) • WAIS & WISC also divided into “indices” • V & P scales each made up of subscales (M=10, SD=3) • Most frequently administered IQ tests; “Gold standard”?

  8. WAIS III • Standardization sample: 2450 adults 16-89 divided into 13 age bands • 1995 census data: age, sex, race/ethnicity, educational level, geographic region • How many factors do the Wechsler scales measure? • V & P plus four indices • Are they valid?

  9. WAIS III Indices

  10. WISC III • Standardization sample: 2200 kids 6-16 • 1988 census race/ethnicity, region of country, parental ed. Level • Additional testing of African-American & Hispanic kids to limit bias • Several validity studies

  11. WPPSI-R • Standardization sample: 1700 children in 8 age groups (1/2 year intervals) between 3 years and 7 years & one age group 7-0 through 7-3 • Based on 1986 census estimates • Generally considered to be reliable and valid • V & FS from preschoolers predictors of 1st grade achievement, PIQ did not predict achievement

More Related