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Differential Ability Scales (DAS)


Exhibit-4

DAS ANALYSIS SHEET

1. OBTAINED GCA AND COMPOSITE DESCRIPTIONS:

Score

.95 confidence

Classifications

PR

GCA:

VERBAL (V):

NONVERBAL REASONING (NvR):

SPATIAL (SP):

2. CONSIDERATIONS OF GCA vs. CLUSTER DIFFERENCES (9 points for significance)

If any comparison is found to be significant and abnormal (10% or less) consider the GCA an inadequate summary of abilities.

GCA vs

DIFF.

STATISTICALLY SIGNIFICANT

ABNORMAL

FREQUENCY (Table B.3. p. 291)

VERBAL:

Y / N

Y / N

in ____ % of the population.

NONVERBAL REASONING:

Y / N

Y / N

in ___ % of the population.

SPATIAL:

Y / N

Y / N

in ___ % of the population.

3. DETERMINING BETWEEN-CLUSTER DIFFERENCES (16 points for significance)

If any Cluster comparison is found to be significant and abnormal (10% or less) consider the GCA an inadequate summary of abilities.

Cluster vs. Cluster

DIFF.

STATISTICALLY SIGNIFICANT

ABNORMAL

FREQUENCY (Table B.3. p. 291)

V vs. NvR :

Y / N

Y / N

in ____ % of the population.

V vs. SP:

Y / N

Y / N

in ____ % of the population.

NvR vs. SP:

Y / N

Y / N

in ____ % of the population.

4. DETERMINING WITHIN-CLUSTER DIFFERENCES (varying point for significance)

If any comparison is found to be significant and abnormal (10% or less) consider the Cluster an inadequate summary of abilities.

DIFF.

STATISTICALLY SIGNIFICANT

ABNORMAL

FREQUENCY (Table B.3. p. 291)

WDef vs. Sim (12 pts) :

Y / N

Y / N

in ____ % of the population.

Mat vs. SQR (11 pts) :

Y / N

Y / N

in ___ % of the population.

RDes vs. PCon (10 pts) :

Y / N

Y / N

in ____ % of the population.

5. SUBTEST ANALYSIS

MEAN CORE T SCORE:

Difference from

T Score

Value

Mean Core T

High/ Low (H / L)

Word Definitions (WDef) :

10

Similarities (Sim) :

11

Matrices (Mat) :

11

Seq. & Quant. Reasoning (SQR) :

10

Recall of Designs (RDes) :

10

Pattern Construction (PCon) :

8

Recall of Digits (RDig) :

11

Recall of Objects - Immed. (RObj-I) :

14

Speed of Infor. Process. (SIP) :

9

Recall of Objects - Delay (RObj-D) :

14

(RObj-I) vs (RObj-D) :

14

No Significant difference

Recall of Digits vs. Objects:

12

Digits / Objects Higher

6. DETERMINATION OF PROBABLE AND POSSIBLE DAS SHARED ABILITIES

Shared Ability

Shared Ability Subtests (includes out-of-level subtests)

Nonverbal Problem Solving:

Mat

SQR

PCon

PSim

H / L or + / -

Verbal Conceptualization:

WDef

Sim

VComp

NVoc

H / L or + / -

Formulation and Testing of Hypotheses:

Sim

Mat

SQR

PCon

PSim

H / L or + / -

Spatial Visualization and Orientation:

RDes

PCon

Copy

Enc

MLLF

H / L or + / -

Visual Discrimination of Figures or designs:

Mat

SQR

RDes

RPic

PSim

Copy

MLLF

H / L or + / -

Verbal Comprehension:

WDef

Sim

VComp

Enc

H / L or + / -

Verbal Expression:

WDef

Sim

RDig

RObj

NVoc

Enc

H / L or + / -

Verbal Information Retrieval (Long term memory):

WDef

Sim

NVoc

Enc

H / L or + / -

Knowledge of Quantitative Concepts:

SQR (b)

SIP

H / L or + / -

Short term memory (general):

RDes

RDig

RObj

RPic

H / L or + / -

Visual short-term memory:

RDes

RObj

RPic

H / L or + / -

Verbal short-term memory:

RDig

SIP

H / L or + / -

Speed of information processing:

PCon

SIP

H / L or + / -

Visual/holistic information processing:

Mat

RDes

PCon

RObj

RPic

PSim

Copy

MLLF

H / L or + / -

Verbal/sequential information processing:

WDef

Sim

SQR

RDig

SIP

VComp

NVoc

Enc

H / L or + / -

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 Pictures

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