Since 2002, 4 million visitors plus:
hit counters
search engine optimization service

  Appletcollection Vertical Menu java applet, Copyright 2003 GD

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

Verbal Conceptualization:

WDef

Sim

VComp

NVoc

H / L or + / -

-

+

Formulation and Testing of Hypotheses:

Sim

Mat

SQR

PCon

PSim

H / L or + / -

+

-

L

H

Spatial Visualization and Orientation:

RDes

PCon

Copy

ENC

MLLF

H / L or + / -

H

H

Visual Discrimination of Figures or designs:

Mat

SQR

RDes

RPic

PSim

Copy

MLLF

H / L or + / -

-

L

H

Verbal Comprehension:

WDef

Sim

VComp

ENC

H / L or + / -

-

+

Verbal Expression:

WDef

Sim

RDig

RObj

NVoc

ENC

H / L or + / -

-

+

L

+

Verbal Information Retrieval (Long term memory):

WDef

Sim

NVoc

ENC

H / L or + / -

-

+

Knowledge of Quantitative Concepts:

SQR (b)

SIP

H / L or + / -

L

L

Short term memory (general):

RDes

RDig

RObj

RPic

H / L or + / -

H

L

+

Visual short-term memory:

RDes

RObj

RPic

H / L or + / -

H

+

Verbal short-term memory:

RDig

SIP

H / L or + / -

L

L

Speed of information processing:

PCon

SIP

H / L or + / -

H

L

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 Pictures

BACK TO TABLE OF CONTENTS

Summary