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| |
Differential Ability Scales
(DAS)
Step-by-step
Analysis
Before an attempt is made to interpret the DAS subtests alone or in
isolation, each shared ability is examined to determine if a cluster comprised
of a number of subtests provides more relevant information than would the single
subtest (Figure-9). In the case of Kate, the following shared abilities seem
worthy of examination: Spatial Visualization and Orientation (H, H), Knowledge
of Quantitative Concepts (L, L) Visual short-term memory (H, +), and Verbal
short-term memory (L, L).
Figure-9 Shared
Abilities
|
Shared Ability |
|
Shared Ability Subtests (includes out-of-level
subtests) |
|
Nonverbal Problem Solving: |
|
Mat |
SQR |
PCon |
PSim |
|
|
|
|
|
|
|
H / L or
+ / - |
- |
L |
H |
|
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Verbal Conceptualization: |
|
|
WDef |
Sim |
VComp |
NVoc |
|
|
|
|
|
|
|
H / L or
+ / - |
- |
+ |
|
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Formulation and Testing of Hypotheses: |
|
Sim |
Mat |
SQR |
PCon |
PSim |
|
|
|
|
|
|
H / L or
+ / - |
+ |
- |
L |
H |
|
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|
Spatial Visualization and Orientation: |
|
RDes |
PCon |
Copy |
ENC |
MLLF |
|
|
|
|
|
|
H / L or
+ / - |
H |
H |
|
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|
Visual Discrimination of Figures or designs: |
Mat |
SQR |
RDes |
RPic |
PSim |
Copy |
MLLF |
|
|
|
|
H / L or
+ / - |
- |
L |
H |
|
|
|
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|
Verbal Comprehension: |
|
|
WDef |
Sim |
VComp |
ENC |
|
|
|
|
|
|
|
H / L or
+ / - |
- |
+ |
|
|
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|
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|
|
|
Verbal Expression: |
|
|
WDef |
Sim |
RDig |
RObj |
NVoc |
ENC |
|
|
|
|
|
H / L or
+ / - |
- |
+ |
L |
+ |
|
|
|
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|
|
|
Verbal Information Retrieval (Long term memory): |
WDef |
Sim |
NVoc |
ENC |
|
|
|
|
|
|
|
H / L or
+ / - |
- |
+ |
|
|
|
|
|
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|
|
|
|
|
|
|
|
Knowledge of Quantitative Concepts: |
|
SQR (b) |
SIP |
|
|
|
|
|
|
|
|
|
H / L or
+ / - |
L |
L |
|
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
Short term memory (general): |
|
RDes |
RDig |
RObj |
RPic |
|
|
|
|
|
|
|
H / L or
+ / - |
H |
L |
+ |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Visual short-term memory: |
|
|
RDes |
RObj |
RPic |
|
|
|
|
|
|
|
|
H / L or
+ / - |
H |
+ |
|
|
|
|
|
|
|
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|
|
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|
Verbal short-term memory: |
|
RDig |
SIP |
|
|
|
|
|
|
|
|
|
H / L or
+ / - |
L |
L |
|
|
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|
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|
Speed of information processing: |
|
PCon |
SIP |
|
|
|
|
|
|
|
|
|
H / L or
+ / - |
H |
L |
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
Visual/holistic information processing: |
|
Mat |
RDes |
PCon |
RObj |
RPic |
PSim |
Copy |
MLLF |
|
|
|
H / L or
+ / - |
- |
H |
H |
+ |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Verbal/sequential information processing: |
WDef |
Sim |
SQR |
RDig |
SIP |
VComp |
NVoc |
ENC |
|
|
|
H / L or
+ / - |
- |
+ |
L |
L |
L |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
WDef = Word Definitions, Sim = Similarities, Mat = Matrices, SQR = Sequential
& Quantitative Reasoning, RDes = Recall of Designs, PCon = Pattern
Construction, VComp = Verbal Comprehension, NVoc = Naming Vocabulary, PSim =
Picture Similarities, Copy = Copying, ENC = Early Number Concepts, MLLF =
Matching Letter-Like Forms, RDig = Recall of Digits, RObj = Recall of Objects,
SIP = Speed of Information Processing, RPic = Recognition of Picture s
|
