Psychology 2070A/B Lecture Notes - Lecture 10: Kindergarten, Exploratory Factor Analysis, Rubber Band
30 May 2018
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Chapter 10
Tests of Intelligence
The Stanford-Binet Intelligence Scales
• First to have detailed administration and scoring instructions
• First American test to test IQ
• First to use alternate items (an item that can be used in place of another)
• Lacked minority group representation
• Ratio IQ=(mental age/chronological age)x100
• Deviation Ratio/test composite: performance of one individual compared
to the performance of others of the same age. Has mean of 100 and standard
deviation of 16
• Age scale: items grouped by age
• Point scale: items organized by category
The Stanford-Binet Intelligence Scales: Fifth Edition
• Measures fluid intelligence, crystallized knowledge, quantitative knowledge,
visual-processing, and short-term (working) memory
• Utilizes adaptive testing: testing individually tailored to testtakers to ensure
that items are neither too difficult (frustrating) or too easy (false hope)
• Examiner establishes rapport with testtaker, then administers routing test
to direct, route examinee to test items most likely at optimal level of difficulty
• Teaching items: show testtaker what is expected, how to do it.
o Can be used for qualitative assessment, but not scoring
• Subtests for verbal and nonverbal tests share same name, but involve
different tasks
• Floor: lowest level of items on subtest
• Ceiling: highest-level item of subtest
• Basal level: base-level criterion that must be met for testing on the subtest
to continue
• Ceiling level is met when testtaker fails certain number of items in a row.
Test discontinues here.
• Scores: raw→ standard → composite
• Extra-test behavior: behavioral observation
The Wechseler Tests
-commonality between all versions: all yield deviation IQ’s with mean of and
standard deviation of 15
Wechsler Adult Intelligence Scale-Fourth Edition (WAIS-IV)
• Core subtest: administered to obtain a composite score
• Supplemental/Optional Subtest: provides additional clinical information
or extending the number of abilities or processes sampled.
• Yields four index scores: Verbal Comprehension Index, a Working Memory
Index, a Perceptual Reasoning Index, and a Processing Speed Index
The Wechsler Intelligence Scale for Children –Fourth Edition (WISC-IV)
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Has mean of 100 and standard deviation of 16: age scale: items grouped by age, point scale: items organized by category. Test discontinues here: scores: raw standard composite, extra-test behavior: behavioral observation. Commonality between all versions: all yield deviation iq"s with mean of (cid:883)(cid:882)(cid:882) and standard deviation of 15. Index, a perceptual reasoning index, and a processing speed index. The wechsler intelligence scale for children fourth edition (wisc-iv: process score: index designed to help understand how testtakers process various kinds of information, wisc-iv compared to the sb5. The wechsler preschool and primary scale of intelligence-third edition (wppsi-iii: new school for children under 6, first major intelligence test which adequately sampled total population of the united states, subtests labeled core, supplemental, or optional. The wechsler test in perspective: factor analysis, exploratory factor analysis: summarizing data when we are not sure how many factors are present in our data, confirmatory factor analysis: used to test highly specific factor analysis.
