STANDFORD-BINET INTELLIGENCE TEST

• Common Characteristics of Individual Intelligence Tests


  • Individually administered
  • Administration requires advanced training
  • Test cover wide range of age and ability
  • Examiner must establish rapport
  • Immediate scoring of items
  • Usually requires about one hour
  • Allows opportunity for observation
• Alfred Binet’s government commission to develop a test to screen for children with developmental disabilities in the Paris schools was in the early 1900s
• Binet collaborated with Theodore Simon in 1905 to create the world’s first formal test of intelligence (Binet-Simon Scale)
• Lewis Terman authored the STANFORD BINET INTELLIGENCE SCALES at Stanford University in 1916
• Stanford-Binet Overtime

  1. Lewis Terman with Maud Merrill revised the test in 1926

  2. Maud Merrill took the lead in revising the Stanford-Binet in the 1950s

  3. Another revision of Stanford-Binet was published in 1972

  4. The Stanford-Binet Intelligence Scale: Fourth Edition was published in 1986

  5. The Stanford-Binet Intelligence Scale: Fifth Edition was designed by Gale H. Roid
• Ratio IQ


  The ratio of the test taker’s mental age divided by his or her chronological age, multiplied by 100 to eliminate decimals
• Deviation IQ


  Reflects a comparison of the performance of the individual with the performance of others of the same age in the standardized sample
• The Stanford-Binet Intelligence Scale: Fourth Edition was based on the Cattell-Horn-Carroll (CHC) theory of intellectual abilities
• The Stanford-Binet Intelligence Scale: Fifth Edition is designed for administration to assess individuals as young as 2 and as old as 85 (or older)
• The Stanford-Binet Intelligence Scale: Fifth Edition has 10 subtests, all with a mean of 10 and a standard deviation of 3
• The Stanford-Binet Intelligence Scale: Fifth Edition is based on a 5-factor model, with these 5 factors considered the most important in intellectual functioning
• CHC Factor Name

  Fluid Intelligence (GI)
• CHC Factor Name

  Crystallized Knowledge (GC)
• CHC Factor Name

  Quantitative Knowledge (Gg)
• CHC Factor Name

  Visual Processing (GV)
• CHC Factor Name

  Short-Term Memory (GSM)
• SB5 Factor Name

  Fluid Reasoning (FR)
• SB5 Factor Name

  Knowledge (KN)
• SB5 Factor Name

  Quantitative Reasoning (QR)
• SB5 Factor Name

  Visual-Spatial Processing (VS)
• SB5 Factor Name

  Working Memory (WM)
• Brief Definition

  1. Novel problem-solving; understanding of relationships that not culturally bound

  2. Skills & knowledge acquired by formal & informal education

  3. Knowledge of mathematical thinking including number concepts, estimation, problem-solving & measurement

  4. Ability to see patterns and relationships and spatial orientation as well as the gestalt among diverse visual stimuli

  5. Cognitive proves of temporarily storing & then transforming or sorting information in memory
• Sample SB5 Subtest

  • Object-Series/Matrices
  • Picture Absurdities (Nonverbal)
  • Vocabulary (Verbal)
  • Verbal quantitative (Verbal)
  • Nonverbal Quantitative Reasoning (nonverbal)
  • Position and Direction (verbal)
  • Form Board (nonverbal)
  • Memory for Sentences (verbal)
  • Delayed Response (nonverbal)
• Exclusions in the standardization sample

  • Persons with special needs
  • Persons with limited English proficiency
  • Severe sensory or communication deficits
  • Severe emotional/behavior disturbance
  • Severe medical conditions
• Psychometric Soundness of SB5

  • Internal-consistence reliability SB5 Full Scale = (.97 to .98) across age groups
  • Test-retest reliability coefficients = high
  • Inter-scorer reliability = from .74 to .97 with an overall median of .90
  • Criterion-related evidence presented in the form of both concurrent and predictive data
• Test Administration of SB5

  1. Takes approximately 1 hour to administer

  2. Begins with the “Object Series/Matrices” subtest, used to assess non-verbal fluid reasoning

  3. Vocabulary subtest is used as a routing test for all of the remaining verbal subtests (adaptive)
• Adaptive Testing on SB5


  1. Individual responds to only that part of the test that is appropriate for his or her developmental level

  2. Each subtest is easy to difficult

  3. Routing tests begin each subtest at an appropriate level of difficulty for examinee

  4. Explicit rules for where to start, where to reverse, and where to stop (or discontinue) for each subtest
• Scoring and Interpretation of SB5

  1. Scores are tallied for each subtest

  2. Converted to a “Scaled Score” with mean = 10 and standard deviation = 3

  3. “Standard scores” computed for non-verbal IQ, verbal IQ, full-scale IQ, and each of the five factors (fluid reasoning, knowledge, quantitative reasoning, visual-spatial processing, working memory)

  4. Deviation IQ with mean = 100 and standard deviation = 15

  5. Composite scores derived from standard scores