PSICOMETRICA

1. WECHSLER INTELLIGENCE SCALE
FOR CHILDREN- IV SPANISH
WISC-IV SPANISH
Dr. Jorge E. Berrios

2. WISC-IV Spanish
 Background
 Published in 2005
 Ages: 6-0 to 16-11
 Mixed sample of Hispanic children (N=851)
 Puerto Rico (11%)
 Cuba (4%)
 Dominican Republic (15 %)
 Mexico (40%)
 Others (28%)

3. WISC-IV Spanish
 New terminology
 Verbal IQ & Performance IQ is abandoned
 Composite Scores & Process Scores
 Full Scale IQ
 Is calculated in the same manner as in the EIWN-R,
PR
 Sum of core subtest scale score
 Subtests scale scores tables are age based
 Calculated in the same manner as the EIWN-R, PR

4. WISC-IV Spanish
 Reliability
 Internal Consistency
 Range:
 Subtests
 0.74- 0.90
 Lowest: Symbol Search
 Composite Scores
 0.82-0.97

5. WISC-IV Spanish Structure
Similarities
Vocabulary
Comprehension
Information
Digit Span
Letter-Number
Sequencing
Arithmetic
Block Design
PictureConcept
Matrix Reasoning
PictureCompletion
Coding
Symbol Search
Cancellation
VCI PRI
WMI PSI
Full Scale
IQ
Optional (Process)
Subtest
CodingCopy

6. WISC-IV Spanish
 Three types of subtests:
 Core
 Should be used in most situations
 Supplemental
 Should be used if a core subtests is invalidated
 Provide more information for clinical decision
making
 Optional
 May not be used as a substitute for core subtest or
to derive composite scores

7. WISC-IV Spanish
Composite Scores
 Verbal Comprehension Index
 Similarities
 Verbal reasoning and concept formation
 Also involve
 Auditory comprehension, memory, verbal expression
 Vocabulary
 Word knowledge, concept formation, long term memory & degree of
language development
 Comprehension
 Verbal reasoning and conceptualization
 Also involve
 Social judgment, maturity
 Information (supplemental)
 Measure factual knowledge
 Also involve
 Long term memory

8. WISC-IV Spanish
Composite Scores
 Perceptual Reasoning Index
 Block Design (core)
 Ability to analyze and synthesis of abstract visual stimuli
 Also involve
 Simultaneous processing, visual-motor coordination
 Picture concept (core)*
 Abstract, categorical reasoning ability
 Matrix Reasoning (core)*
 Fluid intelligence
 Reliable measure of general intellectual ability
 Picture Completion (supplemental)
 Visual perception & organization, recognition of essential
details
* not available on EIWN-R, PR

9. WISC-IV Spanish
Composite Scores
 Working Memory Index
 Digit Span (core)
 Auditory short term memory, attention and concentration
 Digit span forward
 Attention & auditory processing
 Digit span backward
 Working memory, mental manipulation
 Letter-Number Sequencing (core)*
 Mental manipulation, attention, working memory
 Arithmetic (supplemental)
 Attention, short term memory, numerical reasoning
 Also involve
 Fluid reasoning & logical reasoning
* not available on EIWN-R, PR

10. WISC-IV Spanish
Composite Scores
 Processing Speed Index
 Coding (core)
 Processing speed, short term memory, visual-motor coordination,
cognitive flexibility, attention
 Also involve
 Visual and sequential processing
 Symbol Search (core)*
 Cognitive flexibility, visual discrimination & concentration
 Cancellation (supplemental)*
 Processing speed, visual selective attention, vigilance & visual neglect
 Coding Copy (optional)*
 Ages: 8-0 to 16-11
 Visual-motor integration, graphomotor speed
* not available on EIWN-R, PR

11. WISC-IV
Process Scores
 Block Design NoTime Bonus
 Digit Span Forward
 Digit Span Backward
 Longest Digit Span Forward
 Longest Digit Span Backward
 Cancellation Random
 Cancellation Structured
 Coding Copy

12. WISC-IV Spanish
 Administration Process
 Time
 Between 72 and 110 minutes
 Materials
 Protocol
 Stimulus Books (3)
 Stopwatch
 Pencil without eraser
 Red pencil for Cancellation Subtest

13. Administration Process
 Subtests order
1. Block Design
2. Similarities
3. Digit Span
4. Picture Concept
5. Coding
6. Vocabulary
7. Letter-number
sequencing
8. Matrix Reasoning
9. Comprehension
10. Symbol Search
11. Picture Completion*
12. Cancellation*
13. Information*
14. Arithmetic*
15. Coding Copy**
 * Supplemental
 ** Optional

14. Administration Process
 Aceptable Substitutions
 Similarities Information
 Vocabulary Information
 Comprehension Information
 Block Design Picture Completion
 Picture Concepts Picture Completion
 Matrix Reasoning Picture Completion
 Digit Span Arithmetic
 Letter-Num. Seq. Arithmetic
 Coding Cancellation
 Symbol Search Cancellation

15. Administration Process
 Start Points
 Sample
 Group Age
 Reverse Rule
 No perfect score in the first two consecutive items
 Discontinue

16. SCORING AND INTERPRETATION
PROCESS

17. Scoring
 Calculating SubtestTotal Raw Score

18. Scoring
 ConvertingTotal Raw Score to Scaled Scores
 SeeTable A.1
 ByAge
 Obtaining Sums of Scaled Score
 Determining the composite scores, confidence
intervals, and US population Percentile Ranks
 Tables
 A.2 to A.6
 Determining the Adjusted Percentile Score
 Method A
 Method B

19. Scoring
 Analysis Page
 Transferring Index and Subtest Score for Index
and Subtest Discrepancy Comparison
 Performing Index-level Discrepancy Comparison
 Table B.2
 Performing Subtest-level Discrepancy Comparison
 Table B.3
 Determining StrengthsWeakness
 Determining Process Scores
 Performing Process-Level Discrepancy
Comparison

22. WISC-IV Spanish
Interpretation
Level IQ
Very Superior 130+
Superior 120 - 129
Above Average 110 – 119
Average 90 – 109
Below Average 80 – 89
Borderline 70 – 79
Extremely Low 69 - below

23. Case Study