Interpretation of the Waisiii Profile IQs Factor Indexes and Subtest Scaled Scores

CHAPTER 10 Profile Interpretation: What the Subtests Measure 369

Ways of Grouping WAIS-III Subtests 369

Factor Analysis 370 Bannatyne's Categories 370 Horn's Modified Fluid-Crystallized Model 371 Cattell-Horn-Carroll (CHC) Theory 372 Baltes's Life Span Two-Component Model 373 Osgood's Psycholinguistic Approach and the Information-Processing Approach 374 Rapaport's Pioneering Clinical Model 3 76 Dean's Individual Ability Profile 377 Guilford's Structure-of-lntellect Model 380 Abilities Measured by the 14 WAIS-III Subtests 382 Sources and Methods for Analyzing Each Subtest 382 Vocabulary 384 Similarities 385 Arithmetic 387 Digit Span 389 Information 391 Comprehension 393 Letter-Number Sequencing 395 Picture Completion 397 Digit Symbol-Coding 399 Block Design 401 Matrix Reasoning 403 Picture Arrangement 405 Symbol Search 407 Object Assembly 408 Summary 410

CHAPTER 11 WAIS-III Profile Interpretation: Steps 1-7 412

Considerations about Profile Interpretation 412 Considerations for Applying the Interpretive Steps when Only 11 Subtests Were Administered 413 Step 1: Interpret the Full Scale IQ 414

The Role of Full Scale IQ in Profile Interpretation 415 Step 2: Are the Verbal IQ versus the Performance IQ (or the Verbal Comprehension Index versus the Perceptual Organization Index) Significantly Different? 415

Step 3: Are the Verbal IQ versus the Performance IQ (or the Verbal Comprehension Index versus the Perceptual Organization Index) Differences Abnormally Large? 417

Step 4: Is the V-IQ versus P-IQ Discrepancy Interpretable? 421

Step 5: Is VCI versus POI Difference Interpretable? 426 Step 6: Determine whether the Working Memory and Processing Speed Indexes Are Interpretable 428 Step 7: Interpret the Global Verbal and Nonverbal Dimensions, as well as the Small Factors, if They Were Found to Be Interpretable 428 General Interpretation of WAIS-III Indexes 430 Verbal Comprehension Index 430 Perceptual Organization Index 430 Working Memory Factor 431 Processing Speed Factor 433 Horn's and Bannatyne's Systems for Interpreting Global Verbal, Nonverbal, Working Memory, and Processing Speed Dimensions 434

Assessment of Verbal Skills by the Two Approaches 435 Assessment of Nonverbal Skills by the Two Approaches 435 Assessment of Additional Skills by the Two Approaches 435 Computing Standard Scores for the Bannatyne Categories and Horn Groupings 436

Reliability of Bannatyne Categories and Horn Groupings 437 Determining Strengths and Weaknesses within Each System 437 Strengths and Weaknesses within a Cluster 440 Selecting a System 443 Characteristic Profiles in Unique Populations 445 Summary 445

CHAPTER 12 WAIS-III Profile Interpretation: Steps 8 and 9 447

Generating WAIS-III Hypotheses 447 The Nine-Step Process 448 Step 8: Interpret Significant Strengths and Weaknesses of the Subtest Profile 448

Illustration of Step 8: Ryan N. 451 Step 9: Generating Hypotheses about the Fluctuations in the WAIS-III Profile 451

Basic Tenets of the Philosophy of Hypothesis Generation 453

Introduction to WAIS-III Subtest Interpretive Tables 455 Reliability Coefficients of Shared Abilities 455

How to Use Information about Shared Abilities 455 Guideline 1 459 Guideline 2 459 Guideline 3 459 Guideline 4 476 Guideline 5 479 Summary of Sequential Approach to WAIS-III Interpretation 479

A Simultaneous Approach to Hypothesis Generation 479

Common Configurations of the WAIS-III Verbal Scale 481 Common Configurations of the WAIS-III Performance Scale 486 Configurations of Both Scales 492 Illustrative Case Reports 496

Nicole H., Age 34, Learning Problem 496 Aimée L., Age 26, Memory Concerns 501 Lauren J., Age 57, Decline in Job Performance 507 Summary 515

WAIS-III Interpretive Worksheet 517

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Responses

  • Robert
    What is the interpretation of index scores on the WAIS?
    9 years ago
  • Emiliano
    How to interpret discrepency scores in wais?
    9 years ago
  • liya
    How to interpret wais iii interpretable?
    8 years ago

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