Wechsler Scales

Security and Terms Test security Test security Terms Terms Floor Floor Ceiling Ceiling Basal and ceiling rules Basal and ceiling rules

The Wechsler Scales of Intelligence Wechsler defined intelligence as “the aggregate or global capacity of the individual to act purposefully, to think rationally and to deal effectively with his environment” Wechsler defined intelligence as “the aggregate or global capacity of the individual to act purposefully, to think rationally and to deal effectively with his environment” Three scales Three scales WAIS WAIS WISC WISC WPPSI WPPSI

Wechsler Adult Intelligence Scale-IV Ages Ages FSIQ ranges FSIQ ranges Mean, SD Mean, SD min to administer min to administer Core and supplemental subtests Core and supplemental subtests 10 core and 5 supplemental 10 core and 5 supplemental When to use supplemental? When to use supplemental?

Wechsler Adult Intelligence Scale-IV Verbal Comprehension Index Verbal Comprehension Index Similarities Similarities Vocabulary Vocabulary Information Information Perceptual Reasoning Index Perceptual Reasoning Index Block design Block design Matrix reasoning Matrix reasoning Visual puzzles Visual puzzles Working Memory Index Working Memory Index Digit Span Arithmetic Processing Speed Index Processing Speed Index Symbol Search Coding

WAIS-IV Standardization Reliability Reliability Validity Validity Strengths and Criticisms of test Strengths and Criticisms of test Errors Errors

Wechsler Intelligence Scale for Children-V Ages 6 to Ages 6 to About 60 minutes to administer About 60 minutes to administer 21 subtests 10 primary, 6 secondary, 5 complementary 7 of 10 primary for FSIQ

Descriptive Classifications Composite Score Range WISC–V Descriptive Classification Traditional Descriptive Classification (“Old”) 130 and aboveExtremely High Very Superior 120–129Very High Superior 110–119High Average 90–109Average 80–89Low Average 70–79Very Low Borderline 69 and belowExtremely Low

FSIQ 7 subtests 7 subtests Summarizes ability across diverse set of cognitive functions Summarizes ability across diverse set of cognitive functions Most representative Most representative

VCI Ability to access and apply acquired word knowledge Ability to access and apply acquired word knowledge Ability to verbalize meaningful concepts, think about verbal information, and express self in words Ability to verbalize meaningful concepts, think about verbal information, and express self in words

VSI Ability to evaluate visual details and understand visual spatial relationships in order to construct geometric designs from a model Ability to evaluate visual details and understand visual spatial relationships in order to construct geometric designs from a model Requires visual spatial reasoning, integration and synthesis of part-whole relationships, attentiveness to visual detail, and visual-motor integration Requires visual spatial reasoning, integration and synthesis of part-whole relationships, attentiveness to visual detail, and visual-motor integration

FRI Ability to detect the underlying conceptual relationship among visual objects and use reasoning to identify and apply rules. Ability to detect the underlying conceptual relationship among visual objects and use reasoning to identify and apply rules. Identification and application requires inductive and quantitative reasoning, broad visual intelligence, simultaneous processing, and abstract thinking Identification and application requires inductive and quantitative reasoning, broad visual intelligence, simultaneous processing, and abstract thinking

WMI Ability to register, maintain, and manipulate visual* and auditory information in conscious awareness, which requires attention and concentration, as well as visual and auditory discrimination Ability to register, maintain, and manipulate visual* and auditory information in conscious awareness, which requires attention and concentration, as well as visual and auditory discrimination

PCI Speed and accuracy of visual identification, decision making, and decision implementation. Speed and accuracy of visual identification, decision making, and decision implementation. Performance is related to visual scanning, visual discrimination, short-term visual memory, visuomotor coordination, and concentration Performance is related to visual scanning, visual discrimination, short-term visual memory, visuomotor coordination, and concentration Ability to rapidly identify, register, and implement decisions about verbal stimuli Ability to rapidly identify, register, and implement decisions about verbal stimuli